Story Posting!- Arrival Unto a Post-Apocalyptic Alternate Reality- Fate UBW/Nier Automata- Chapter One- Rin Tohsaka x Shirou Emiya x 2B For R (Patreon)

Arrival Unto a Post-Apocalyptic Alternate Reality

Fate Stay Night Series/ Nier Automata

By Azure/For R

Chapter One- Meeting the 2B-Battle Unit

***

Sometime after the events of the Fifth Holy Grail War where its conclusion prevented any further wars from taking place since the Holy Grail itself is destroyed, Rin Tohsaka and Shirou moved on with their lives together by leaving Fuyuki city and moving to London where they both joined the Mage's Association by moving into the Clock Tower after graduating High School. Shirou, being the ever-resourceful and crafty Mage-in-training, became Rin's cherished lover who had followed her on her path to studying Magecraft and becoming a renowned Master like all those before her. Likewise, he had joined the Clock Tower with her to help further his own capabilities as a Mage, feeling optimistic about the future since now he knew to expect uncertainties yet still dare to challenge them with resolve. He learned much from his Counterpart Archer Servant Emiya and chose Rin to be with and face the world together. He looked forward to the future and had Rin there by his side to help keep Shirou on the straight and narrow so as to not let himself be corrupt with apathy and despair.

Nowadays, just a little under half a year into their enrollment into the Mage's Association where they lived together in their shared dorm room inside of the Clock Tower's many infinite spaces, Shirou took up work as a part-time butler to a rich and wealthy-bodied student named Luvia Edelfelt to make money for food among other things and currently Shirou was watching her go at it with Rin in a seemingly 'friendly' sparring contest somewhere down in one of the Marble training floors of the Tower. Rin often saw Luvia as a rival of sorts to 'beat' and seeing the busty blonde flirt with Shirou on more than one occasion motivated the girl into wanting to bash her face in.

That's where he was right now...

"Heh, be careful, Rin! Watch your---unghh...right side because Luvia is a grappling type of fighter. I---you're not even listening to me, are you?" Shirou said to himself after failing to reach the ears of his girlfriend while the two of them, dressed in skin tight gym clothes with kneepads and arm bracers on, brawled with Magecraft-enhanced blows that shook the entire training area.

Clock Tower students from all sides watched as Luvia threw down Rin with a suplex, creating a large crater following an intense shockwave before Rin retaliated with an attempted horse kick straight from the ground by using both empowered legs with a fierce look on her face!

"Pwaah...! Eat it you, big-chested creep! Ngnghh..!" Rin yelled out, almost snarling and even then, she looked beautiful in Shirou's eyes since the girl was just that passionate about trying to win against Luvia. Of course, she still did this for herself as well as for Shirou, not liking that the blonde 'boss' he worked for had it in for him on a romantic level. Alas, everyone was enjoying the intense sight of two Magecraft-powered girls slugging it out with fierce fists of power and leg-sweeping motions followed by hard-hitting spin kicks. Luvia gave Rin just as much as she gave her, resulting in the two making a crater-filled mess of the entire training room while Shirou rubbed the back of his neck with embarrassment.

'I wonder if this will end anytime soon. I'm really hoping the Headmaster Lord El Melloi has something for us on that project he mentioned earlier involving the Kaleidoscope, otherwise, I'll have to see Rin getting...her ass handed to her since Luvia knows more grappling moves than Rin knows martial arts.' Shirou thought to himself wryly as Luvia threw Rin into the air and then leaped like a rocket to grapple the Japanese girl and threw her down onto the floor before coming down on top of her with a Mage-powered bodyslam!

"Yeeeehhaaaaaaawwwww....! Here I come, Tohsaka...!~" Luvia let out in a shrill bout of haughty laughter before slamming herself right down onto Rin, creating an intense shockwaves explosion that shook the entire area while leaving a hefty dust cloud in its wake!

!

"Gaagghh....! Mmgn! You...bitch...! Nnghg...!" Rin let out a whimpering moan while struggling to get up, but failing to do so as she was apparently beaten and left with a multitude of light bruises and scuffs all over her slender body. Luvia flipped herself back up onto her feet and stood proud over Rin, flaunting her victory as well as her healthy body with the usual gesture of presenting her hand underneath her face.

"Ahhh...haah..haaa....! That makes round fifty-three in my victory count, Tohsaka. Maybe now you'll stop challenging me since you know there is no way to win, although I do admit that you are definitely getting better. At best, marginally so anyway. Ah hah ahah.~" Luvia laughed, earning a scowl as Shirou went over to pick up Rin from the crater on the ground and start carrying her out of it to bring her over into the infirmary ward to heal up.

'Tch...! I'll get her someday, I swear it. Lord Melloi better have something for us on that Kaleidoscope Project or I'm going right back to training so I can beat that smug look off Luvia's face.' Rin thought venomously, ignoring the blonde's derisive laughter and feeling glad Shirou was always there to pick her up and offer her support. Not just in a literal way, but in a spiritual one as well.

"You'll get her next time, Rin. I think this fight lasted longer than the other challenges you made so far." Shirou comforted her, leaving the girl blushing with gratitude and resting her head against his side in comfort while knowing Luvia looked on at them from afar. She was half-tempted to flip her off with a smile that said 'At least I have Shirou and you don't', but Rin held back against the urge as they left the training arena and headed right over to the infirmary to get her patched up.

"Thank you, Shirou. Mmmhm...!~" Rin kissed him on the cheek from the side, feeling glad she has him for however long they'd be together or alive in this bold new world with no other Holy Grails to fight for.

*******

Later on, after being called into the Main Headmaster's office; Lord Melloi, AKA Waver Velvet, Shirou, and Rin arrived with the latter having a series of small bandages covering her abrasions. Magecraft healing was still working its way through her system to make all her bruises and wounds inflicted by Luvia disappear. Rin stood there in her red shirt and dark, sleek ladies' pants combo while Shirou had worn just a simple dark jacket over a form-fitting pair of pants and nothing else. There they stood in front of the man of the Clock Tower himself, gesturing for them to follow him into a passageway opening up behind one of the bookshelves where they saw a Magecraft lab somewhere down below a flight of stairs.

"Come with me, you two. It is time we have you explore the other side of this Kaleidoscope. Effectively it is a mirror to another side of the world, perhaps a Bounded space or an extra-dimensional field taking place outside of reality altogether, but we truly don't know for sure yet, do we? Only Keitscher Zeltretch himself has ever used it and who knows what he found when exploring the other side?" Lord Melloi said as he led the two of them down a flight of stairs over to one of the Clock Towers' more secretive Labs where all manner of mystical Items and Magecraft research take place. "Also, Rin, did you really go and challenge Edelfelt again? Haven't you had enough at this point and shouldn't you be a little more impassive to her taunts?"

"Hmph, easy for you to say. She isn't getting all clingy with the person you live with and laughing about it in your face like she does with me. All while getting cozy with the person that works for her too. The person who happens to be my boyfriend, not hers. The way she just so casually flings herself into Shiro's arms infuriates me to no end, besides the way I see it, it could be considered training for my martial arts. Even if she's been beaten dozens of times already....gughh...I hate reminding myself of that." Rin explained, making a comically exasperated expression by putting one of her hands to her forehead and cursing Luvia's name yet again as they walked.

Melloi sighed and ignored it for now, arriving in front of the Lab's open space where all manner of research was being conducted while Shirou massaged his girlfriend's shoulders with a smile.

"There now, Rin. I got you. Let's not think about Luvia right now, instead, let's focus on what we might find on the other side of this...portal thing. Is it really some kind of gateway, Headmaster Melloi?" Shirou asked, feeling Rin whimper and purr at the soft touch of Shirou's fingers as she felt her shoulders relax right away.

'Mmnhm...he's so good with his hands...! I'm going to have to give it to him extra special tonight when...or if we come back from exploring this thing. I wonder if I'm being smart or stupid deciding to volunteer to explore the other side of this magical artifact right here.' Rin thought to herself with concern as she looked up at the large prismatic oval the size of a large gate standing right in front of them attached to several Magecraft terminals that operate it. It was like a large slice of meteorite in how many colors were imbued into its jewel-like surface, appearing to be a flat wall yet obviously, not an impermeable material since Shirou and Rin could feel the waviness of its surface shifting about like water. It was bizarre and otherworldly, making her fret in fear for her boyfriend's safety as Melloi led them closer to it. "Have you sent anyone else into this thing before us, Headmaster?"

"No, I hadn't. We figured it was too dangerous and shelved the project until just recently. I figured that it is an advanced form of Gem Magecraft, something you're familiar with quite well, Tohsaka. It is a para-causal device that only the most enlightened, most skilled, most powerful Mages of the past several centuries could ever hope to discover the secrets of. Besides, we're simply doing a test. Safety harnesses of Prismatic Magecraft will be attached to the two of you if you decide to go through with it here and now. It has just 'awoken' in a sense and now is the time to strike while the iron is hot. So will you...or will you not, Rin Tohsaka and Shirou Emiya?" Melloi asked, turning around and facing them with a serious look on his face. Rin had a look of resolve on hers yet felt concern for Shirou since he was not on the level of Magecraft she was at and the last thing she wanted was to lose him.

Yet, Shirou stepped forth with an equally-stern expression of resolve of his own. He wasn't afraid of anything right now, at least that's how it appeared to Rin at least. The ginger-haired young man turned o look at Rin with a confident smile before taking her hand into his right as a sign of reassurance, making her blush and nervously look back at Melloi with a serious expression.

"Yes, we are. Fixate those Safety harnesses then, I...we....want to see the other side and will come back to report back to you, Headmaster." Rin said firmly and Shiro nodded in agreement with her.

"Yeah, what she said. Wherever Rin goes, I go. Simple as that. For all we know it could just be a parallel world or something crazy like a place in the distant future." Shirou commented, seeing some of Melloi's lab assistants come over with special Magecraft-powered harnesses held in their hands when getting behind the two of them to begin strapping them both into place.

"Or both, and that's what I'm worried about. There are a lot of mysteries in the world, some more so than others such as alternate universes, parallel events, and so on, Who knows what you might find so it is best to be prepared. Tohsaka, I've had one of my assistants provide you with a Sling bag full of Gems you can use for your Magecraft. And Shirou, I trust you are capable of Projecting your own armaments' as you've told me you're able to do like before, yes?" Melloi asked, making Shirou nod once again as the assistants finished strapping the safety harnesses onto each person's back. "Good, let's see what this other side of the Kaleidoscope has in store for us. Activate it."

One of the assistants close by inputs a few key commands into one of the Magecraft terminals, making an electric teal steam of glowing Magical energy begin channeling itself through a series of wires all around the floor and ceiling into the large oval obelisk itself.

!

It started glowing beautifully with bright, shining, prismatic energy, making Shirou and Rin cover their eyes with their arms as they proceeded to head on into the unknown while holding each other's hands.

"Let's go, Rin!~" Shirou let out, hearing the girl say the same thing to him, both of them walked forth and carefully walked into the liquid-like surface of the obelisk where they were Magically transported to someplace, disappearing in a flash of Magical light that left Melloi and the rest of the Mage Assistants in the Laboratory covering their eyes for a brief moment.

"Ungh...! Damn that's bright, how are they looking?" He asked when seeing the light die down within the obelisk stone-like structure of the Kaleidoscope. Various other Mage assistants began running readings on all the techno-magical equipment and machinery they had connected to the Gate, some of them looking puzzled as the two prismatic harnesses remained intact despite being nearly invisible. 'They're phantasmal an ever-binding, so at least there's no need to worry if they go flat, but if some kind of reading displays ceased life signs then...I know we made a mistake. Don't let me down, Tohsaka. Emiya.'

"Reading's stable, sir. Nothing out of the ordinary and Prismatic Ether Tether is holding strong. I believe they'll be able to go just far enough within that other world without any trouble." The Assistant checking the Gateway's functionality answered with a few others nodding in agreement with her while Melloi simply stood up straight again, eying the Gateway with a furtive look on his face.

"Whether or not they'll run into trouble though is another matter. Who knows what they'll find on that other side of the Manifold? Keep me updated every hour and be sure to notify me if there is a problem with the Harnesses. I'm not losing two promising pupils to this thing." Melloi instructed, standing by with a slight frown on his face before turning his head to look at the holographic display of the World's information the Gate could only tell them in small cryptic batches of information otherwise unreadable. 'I wonder what kind of world it is they went into. My money is on something Dystopian.'

!

Suddenly a loud series of urgent beeping noises erupted from within the Lab, causing Melloi to look around at his assistants for an answer as red glaring warning signs lit up all over the holographic screens in the room!

"What's going on? What's happening?!" He demands and sees all the men and women of the lab working at full capacity with anxious looks of panic on their faces.

"S-sir! We have no idea! Suddenly there was a Time-Warp anomaly occurring inside of the Gateway space....! It's interfering with the functionality of the Harnesses!" One of them answered urgently and Melloi gave the signal to start reeling the two back into this reality, leading to the mechanism on the floor the Harnesses were attached to start pulling back each one only to strain against some kind of force inside, causing them to struggle until the Gate started lighting up again.

"The gate! It's reacting....! T-the readings! Tohsaka and Emiya are---!"

Suddenly the Prismatic Tethers snapped, causing those jewel-like strings of unbreakable Magecraft material to fly into the air disconnected from the two students they were supposed to stay attached to. Melloi looked on in horror and shock as they failed around while the Gateway powered down right in front of him, much to the stunned silence of the Assistants within the lab.

"--disconnected. I....sir....I...believe they are now marooned back in that other world now." One of the key assistants who stood by one of the main holographic monitors receiving the feed of encrypted information on the world said aloud.

"...shit." Melloi cursed as he stood there, staring at the mysterious object wondering what to do next and how he could get them back.'

********

Where Shirou and Rin were...

In a bright flash of energetic light, both Shirou and Rin stepped through the portal which had brought them into what appeared to be a lush, verdant scenery of city ruins overrun with nature and greenery all over. Buildings of all kinds, all of which were from a modern era when they weren't so ruined they were unrecognizable were seen either covered in nature or cluttered against each other in a sea of devastated civilization. Yet, for even Shirou who found the sight of what he walked into depressing, he couldn't help but feel a sort of serene peacefulness to it all. He walked out with Rin as the two emerged from a shrinking portal of light, the prismatic harnesses were still attached to their backsides via jewel-like filament cord until--

!

They snapped off from the harnesses the two were wearing, causing Rin to look back at them with horror etching onto her face.

"W-whaaaaaaaat...!? T-they snapped?! They're not supposed to do that! Those things are Ethereal! They could extend as far as an entire continent and not get tangled by anything in the way, it'd be as though they're chained to our very souls! That means they can't be cut by anything either! So what the hell...!?" Rin let out, shocked and clutching the sides of her face in panic. She was breathing heavily when wondering what to do, and fortunately, Shirou was there to comfort his girlfriend in this time of crisis. For some odd reason, he wasn't too afraid or alarmed of what would happen, only curious as to what they'd find.

"Alright, there, calm down, Rin. We...we can get through this and figure this out. Remember, Bounded Fields sorta worked like this too back in Fuyuki, I'm sure Lord Melloi will find a way to get us back in due time. He is the smartest Magecraft Sorcerer there after all." Shirou reassured, clutching each of Rin's shoulders through her red shirt and feeling them up in soothing ways that made the brunette slowly ease up on her tense heavy-breathing motions within her chest. 'This is bad news, but I have faith in Headmaster Melloi fixing this. Barring that, well....at least we wound up in a  seemingly peaceful place...one that looks like the End of the World happened a long time ago.'

Rin steadied her breathing and relaxed, calming her mind and nodding to herself after believing Shirou's words to be accurate. She knew that it wasn't impossible to come back from this other world, even with their literal Safety harnesses disconnected from their bodies. Rin could still feel their phantasmal effects of binding all around her chest even though they were unseen and attached to someone's life force with Magecraft. The fact that they were disconnected somehow only meant trouble for them though.

"Yeah...yeah, you're right, Shirou. Let's...*whew*..let's go take a look around and see if we can learn a few things while we're here, assuming we won't be staying here forever that is." Rin said and looked around to her side, moving with Shirou as they took in the surroundings from all over with a serene yet melancholic sense of wonder to be had. 'Wow, I would say this is an amazing discovery but in this case, it seems that this world had gone to waste a long time ago. A very long time ago nature covered nearly every building in sight.'

With a sigh and a steadied breath, Rin told Shirou to let go of her shoulders so they could begin walking around and touring the area. The two of them kept a careful eye out on everything around them in case there were wild Animals or Monsters on the prowl for human meat, but so far all she saw were the occasional woodland critters and a moose that they walked by when crossing a pasture.

"That place looks like it's the most intact building yet, maybe it'll provide shelter until we figure out our next move on where to go. We should also keep an eye out for any smokestacks into the sky or any bustling lights indicating people still live around parts of this....decimated city. Wow, Rin, we really are in another world, aren't we?" Shirou let out, amazed yet saddened all at the same time. It's not another part of the world we live in, otherwise those giant machines.....wouldn't be there. What are they?"

"Huh? That's a good question, Shirou. They did say the Kaleidoscope opens up pathways to various worlds beyond our understanding, we could just be another version of ours where things ended in less-than-pretty circumstances involving machines. One of many variables, although those are weirdly out of place in the middle of civilization like this. Ah, there....! We can camp out there at the bottom of that building, it has the most walls intact surrounding it and it is a fairly defensible position in case we get attacked by something." Rin pointed out, making her boyfriend nod in agreement with her as they both hurried over to the makeshift hideout-to-be, scurrying across ruins of pavement while unaware a pair of eyes were watching them from behind what appeared to be a black blindfold

They belonged to what appeared to be a slender woman wearing a fashionable black Gothic dress that was serving as 'armor' with her thigh-high boots reaching up to just below her frilled skirt. A puffy dress opening in her chest region showcased her ample breasts nicely with puffed shoulder sleeves attached to more black and white Gothic material. One might say she resembles a literal Doll designed with the prospect of battle in mind. Her hair was a bouncy mop of silvery-white hair styled in a particularly engaging fashion matching her pale complexion. Behind the dark blindfold she had over the top half of her face, to anybody else she'd be considered beautiful but with the large weapons of silvery white and gold hovering behind her back, she'd easily be considered dangerous first and foremost.

...

"Confirmed, Commander. The source of that energy anomaly is just two individual Androids, one young man and a young girl. But, my equipment seems to be malfunctioning right now because I do not detect the usual energy signatures of their Cores at all. All Androids have them as do Machine forces, but not these two. Could you have Support Check the specifications remotely real quick so that I may verify for certain this time, I---"

"2B...." An electronic voice came out from the other end of her communication device, a floating Mech hovering beside her, halting her in her tracks as she waited for confirmation. "...we believe your equipment is functioning perfectly. We have picked up the information from here and have run through scans on it ourselves. Those are, two humans you see, not Androids."

The Android woman, 2B, heard her Commander say back to her which left the woman's mouth falling open in shock and she once again examined the two foreign entities from afar with great interest. The battle-Type Android had all but learned of Humanity's extinction many 'generations' ago when her previous incarnated models were made to serve as Executioners to a 9S Unit that would always discover that uncomfortable truth, yet still she kept on fighting for  YoRHa anyway despite that grim reality. Now there were two actual, living human beings somehow dropped into her lap as well as the lap of YoRHa.

"Commander? Please advise, what should I do then? There has never been another human being, living, in recorded archives to have been walking this Earth for millennia. Do I go and contain them? Bring them to YoRHa's base?" 2B asked, waiting in silence for a few moments until the buzz of Commander White's voice reached her synthetic ears yet again. She stood by patiently like any good soldier, waiting to hear back from her on what to do about this startling discovery. 'They're even reading as biological according to my scanners. I may not be as advanced in detection and information as a Scanner Unit, but even from here I can tell what they are. Unbelievable. The first pair of living human beings, a  man and a woman, in untold millennia to walk this Earth. How could this be?'

*Bbbzztt!*

"Alright, we have...confirmation on what your next action is supposed to be, 2B. According to YoRHa's highest command, you are to present yourself as an envoy to them both. We have little doubt they'll be in demand of resources, a safe haven, or information. In turn, we desire information as well such as their origin since their existence isn't supposed to be possible. Offer yourself, by which I mean sexually, to the male in hopes of securing an alliance and perhaps.....conceiving new life in the process. That is an order. Regardless of his demands and even if the male agrees to allow us to protect them, offer yourself to him anyway as a condition. We need these two alive and healthy to secure a new start to the human race." Commander White's voice spoke out with firm authority, missing the surprised look on 2B's face as she continued to observe the red-headed male from afar as an unusual emotion was felt throughout her cortex. She was confused and tapped the side of her Visor/communicator unit again to contact her Commander.

"Can you....repeat that, Commander? I am to....seduce the male....with my body? H-how....is this a sound and logical directive? No less conceiving a child? We Androids of YoRHa...cannot be able to do that, right?" 2B asked with uncertainty, receiving silence as she examined herself in a nearby puddle of water for a moment before lifting up part of her visor from her face. A bright, glowing blue eye greets her in return as she awaits confirmation from her Commander again.

Back up there in the 'Bunker' Base of  YoRHa which 2B and a legion of Androids operate from, the lone woman with blonde hair and clad in nothing but white garments looked around at all her other YoRHa comrades for a moment before answering her quietly.

"Yes, 2B. We can, it is a long-kept secret hidden from us by YoRHa central command that should there ever be a discovery of a perfectly preserved human male specimen we are to....procreate with that individual in the hopes of siring a new life form. Our bodies are a mesh of experimental synthetic nano-tech composed of many compatible features a human male or female would find appealing in a sense. Inside of the female Unit's body, there is the capability of producing life when coming into contact with a virile male specimen. Though it was in doubt for thousands upon thousands of years that we would find one, here is one right now and you are to 'secure' his alliance by any means. I'll not waste any more time discussing this with you. Carry this order out, 2B, and see to it that this male and his female companion will want sanctuary with us. If that is too much of a push then simply stay with them, protect them with your lives by sharing whatever domicile they seek to make  for themselves. That is all. Good luck."

...

*Beep!*

...

Back down on Earth, 2B remained speechless as she felt the communication go dead and brought up her Visor blindfolds off her head to reveal both electric blue eyes directed forward at the ruins they went into. She made her weapons disappear within the Holographic storage space provided by her Pod and began making her way forward, provocatively swaying her hips with uncertainty on her face.

"Very well, Commander. I shall do what is best, for the glory of mankind....." She said to herself quietly, quickly bringing up as many files of information regarding seductive human practices she had learned from ancient relics and archived files as she could to better her chances in her mission. 'What do I do with the female companion if she is his lover and won't accept me offering my body to him for a successful partnership? Perhaps she'll be willing to commit to lending me that man's seed if I tell her we can provide them sanctuary as well as all the information they could ask for. This truly is an unforeseen turn of events, I never expected to find out that all of YoRHa's female androids could produce life.'

**********

After setting up camp inside of one of the warmer parts of the dilapidated building they were in, Shirou and Rin had got a fire started and set up all their supplies to be safely contained within their tent right next to their broken Ether harnesses. Upon losing contact with its energy source back in the Clock Tower laboratory, they solidified into holographic backpack-like objects and were set aside by both Rin and Shirou so they could be able to change clothing. Rin was hunched over the campfire preparing a meal with Magecraft, using any small resource she could to ensure that the two of them could have a healthy male as well as safely operate out of this building for the time being until they were pulled back. She'd be the first to know if their Harnesses started working again and trusted Shirou to be on the lookout since he was the better fighter with his Projection Magecraft as well as his access to Archer Emiya's Reality Marble.

"Okay, I don't know how strong Mana is in this world, but I do feel an abundance of it in the atmosphere and all around where's all that nature. There's got to be Leylines aplenty, but let's not take any chances and run our Mana supplies short just in case. Shirou?...What are you looking at?" Rin explained, then asked when she saw that her lover looked over at the 'entrance' of the dilapidated building they just come in through where she saw an oddly-dressed woman with electric blue eyes stand before them both. She wore a dark-colored Gothic dress with long thigh-high leggings that seemed impractical since they had high heels. She was a picture of serene, melancholic beauty and Rin could also admire her appearance were it not for the fact she felt this mysterious figure was something not human at all. 'So we're not alone after all..! This is a relief, although...if Shirou is on edge then perhaps I should be too. Not that this isn't welcome, I was worried we'd go crazy from being alone in this bizarre alternate Earth. Perhaps she could at least provide us answers.'

Shirou got into a defensive position and took a fighting pose out of cautiousness until he heard the woman speak clearly to them both, looking unafraid and peaceful.

"Relax, I am not here to cause either of you any harm. I am YoRHa Battle Unit designated 2B and I have come to request a form of alliance with you two humans. May you hear me out? I take it you may want to know about the world you're in or wish for asylum with YoRHa." 2B introduced, making Shirou relax and look over at Rin questionably who then nodded to him with certainty before getting up to go meet her.

"S-sure, let's talk. We..uh...were not meant to stay in this bizarre world for too long, but an accident happened and now we're stuck here. Can you tell us everything you know about this world, uh....2B? What kind of weird name is that anyway? Are you....really a robot of some kind?" Shirou asked dumbly, rubbing the back of his neck for he felt awkward talking to the beautiful woman while Rin stood right next to him with a furtive smile.

"Well duh, she just called herself a 'Unit', Shirou. And Automatons have been a thing in Magecraft, so it's not entirely surprising, but still...you don't look robotic to me at least. And yes, please tell us what you can about where we are, starting with why we don't see...any other people around these ruined buildings for starters. Are there others hiding somewhere? Or..." Rin trailed off at the last part, afraid of the answer she felt she was certain of till 2B answered for her.

"You are the only living humans left on this Earth." She revealed, shocking Rin and Shirou to their cores and making them exchange looks of alarm as she continued on. "For thousands of years it has been this way, we of YoRHa have been given the purpose by the late humanity to fight and destroy the machine invaders. Alien lifeforms came to this planet countless millennia ago and brought with them their machine forces which we have been fighting to this day in an endless stalemate. Most YoRHa Androids like myself don't know the truth yet and would be at risk of insanity if they did, making me one of the few left who knows. The aliens themselves may be gone but their Machine legions remained and since that conflict reached its halcyon many years ago, humanity has long since died with the majority of my people believing them to be alive and in command on a base located on the Moon. I have been instructed by my Commander to give you any information you require in exchange for your agreement to the alliance. That is...if you'll agree to a certain condition first." 2B finished, feeling a bit tingling in her chest as she felt the rising notion of offering her body for sex with the man while they both looked utterly devastated after being told the truth.

"I...knew it, I thought something was off about this planet when we came here, but what she just said confirms it, Shirou. I think we should take what she's offering. We'll need a place to stay safe until Melloi can pull us back to  our world." Rin explained, looking at Shirou from the side and noticing 2B eying him with a peculiar look on her face. "Oh, how rude of me. My name is Rin Tohsaka and this is Shirou Emiya. To make a long story short, we're both...travelers from another world....not of this one, and we are currently stranded here. We would like whatever help you could give us, provided there are no conditions to meet of any kind with your....people."

"There is...one condition and it is...mandatory from my Commander. Would you like to hear it?" 2B asked, making Shirou perk an eyebrow while Rin simply nodded her head casually, with a friendly smile. "Very well, Shirou Emiya, I....would require you to inseminate. Engage this body in the sexual act of production so it may provide new life, it is quite capable of doing so and can only be done when it is with a virile human male specimen like yourself."

Rin froze in place and felt as though her body turned into stone when she had processed the words 2B uttered just now, leaving a few veins popping up all around her forehead till she couldn't contain herself anymore.

"You want him to what....!? S-Shirou is my boyfriend, you...! I..I...know we're desperate and in need of sanctuary but t-this is....insane...! We could be going home any moment now and I---!" Rin cut herself off mid-rant when she looked at her side, noticing the now defunct pair of Harnesses showing no trace of Mana anywhere within their constructs. She was livid and full of boiling-hot frustration right now after having accidentally marooned here with Shirou as the only other living person. She looks back at 2B quickly and bites down on her bottom lip with fists quaking at her side for her mind was in turmoil over what to do about this off for information. 'Uuuurghghhhh! Who am I kidding? We have no leverage in this outside of Shirou's value to these.....crazy, weird sex bots offering us information and shelter from their machine enemies. But how....can Automata produce life? Are they part of some advanced Magecraft or something? I....don't know what we should do.'

She looked at Shirou next, appreciating 2B's silence as the girl was now quaking with indecisiveness over loaning out her boyfriend's seed to these things. It seemed every bit as human as they were, at least from an outward appearance, yet Rin couldn't resist feeling at odds with herself in wanting to do this versus needing to do this. With Luvia it had been different since she was flirting with Shirou, but this Android was literally asking her boyfriend for babymaking sex and Rin couldn't think of a reason to say no to her outside of clingy pride and ownership of her beloved redheaded doofus. Shirou picked up on her obvious signs of distress wrought by conflict and reached over to place a hand on her right shoulder, stirring Rin out of her thoughts and making her gaze into his eyes to see a genuinely kind pair of amber orbs staring back at her.

"We...don't have to do this if you don't want to, Rin. I'm sure Headmaster Melloi will come up with something to pull us back soon." Shirou reassured half-heartedly, feeling genuinely lost and concerned in this post-apocalyptic world they now lived in until he felt Rin reach over to squeeze his left hand and clutch it in comfort. She noticeably exhaled and looked up at him for a moment, giving him a sweet smile before turning her head back over in 2B's direction with a furtive look of unwitting surrender.

"It's fine, Shirou. We....need to do this, because...what if we really are stuck here and those Machine Enemy hostiles they're talking about find us and come for our lives? We may not even be able to access Mana anymore either at some point. Alternate worlds or parallel, theoretical realities often have these kinds of effects on Mages as I've learned about in the archives pertaining to something called Grand Order. We.....should take her up on the offer because we need sanctuary and help learning about this new world we might have to live in. So go ahead, Shirou. Do her." Rin admitted, blushing furiously with slight rage as she saw Shirou blushing rather profusely out of uncertainty now that he was looking at 2B with a nervous smile.

The Android inwardly seemed pleased and removed her 'Visor' from her head, revealing a pair of glowing electric blue eyes that just captivated Shirou entirely, leaving him standing in place. She dropped it onto the ground beside her legging-covered feet and brought each of her gloved hands up to her chest, reaching the white-lace cleavage window of her dark outfit before pulling it open to reveal each of her supple breasts. They were slightly perky yet just as lush and round as a woman's breasts would be, her nipples were poking out now as she had ripped her dress open enough to let each of them fall out into the open. Shirou let out a winded groan of surprise for he was feeling erect already, making his bulge appear before the two girls through his pants while Rin looked on in confusion and arousal.

"Gugh! Right here...!? Now...?!" Shirou blurts out and 2B nods her head immediately to his question as she reaches around the side of her waist, undoing a latch and letting that large puffy dress skirt come off. Almost like a Doll's velcro-latch clothing accessories, it came off and fluttered to the side next to 2B's blindfolds to reveal the white unitard bottom half covering up her pussy from view while clinging tightly to her frame from the midsection. 'S-she's....beautiful....! But is Rin really okay with this...!? I mean, I get that this is a desperate situation, but j-just...how am I supposed to do this with a clear conscience? Make a baby with an Android? is that even possible?'

"I know what you are thinking, and 'yes' it is. I have just learned it recently myself and would not have believed it if my commander hadn't just told me we could. Apparently, all of  YoRHa's female Androids are capable as we are Techno-organic on a core level." 2B explained and walked up to the 'comfiest' spot in their hideout, which was a padded sleeping mat the size of a mattress somewhere in the center of the floor, and plopped herself down onto it with legs spread wide. 2B even put on a more suggestive smirk so that her facial expression gave off a sultry sign of wanting to be desired by Shirou.

Rin was still stunned speechless and was hugging the side of her arm with a pursed pair of lips, wondering if she should be around for this until she heard 2B's voice call out to her as well.

"You need not be excluded from this either, Rin. While the offer for your boyfriend's seed is absolute, your exclusion is not. And I do not mean that in the sense that male Androids will tend to you, I merely state that you need not be refraining from indulging in his seed yourself. Siring life is important and I have no doubt that you are considerably fertile and attractive to boot. It is any wonder while Shirou, from what I've seen, has been eying her rump  repeatedly before my arrival." 2B addressed, making Rin do a double-take and blink once or twice in a stupor as she looked between Shirou and 2B as though something inside of her lit up.

"T-together, huh? Certainly, the kinkiest thing I've experienced to date and if you don't mind me staying with Shirou, I....I.....I accept! Now hurry up and get those pants off, Shirou...! She's waiting, okay?!~" Rin yelled out loud, beginning to undo her red shirt and unveil her modestly-sized yet ample set of equally perky sits in a brasserie to Shirou. The ginger-haired Survivor of Fuyuki simply stared at her in wonder, feeling his cock grow harder and stretching his pants even wider till 2B decided to take action. The Gothic-dressed Android got off of the sleeping mat and brought herself before Shirou's waist while he was standing up and still gawking at Rin undressing herself in a hurry.

She brought each of her gloved fingers over to his crotch, earning his interest and stroking his arousal even more as they undid his zipper and hastily pulled down his pants. Before Shirou could say anything, 2B had his cock out fully sprung and erect in its turgid twelve-inch glory with a width as thick as a person's wrist. It was such a marvel of virility that 2B expressed genuine surprise and looked up at him from beneath his waist.

"My, you are quite virile indeed. Inseminating myself with your sperm and conceiving your child will be quite the experience indeed, and do not think that YoRHa will be done with you just impregnating me, Shirou Emiya. But I digress, to maintain peace between our alliance it shall only be the two of us sharing your seed....at least for the time being anyway.~" 2B said, feeling intrinsically sultry and increasingly aroused, which she didn't even think was possible as she began rolling her hands all over the thick slightly-curved shaft of Shirou's penis like so. They sensually grooved all over the contours of his phallus, experimenting by prodding spots that 2B considered to be heavily erogenous areas like so.

"Mmnghgmhh! Hmmgnghh! Ooaahhh...! Hell....! Your hands feel as firm as an iron vice, but you're touching me so softly...and smoothly too. Mmhmmh..! Do what you want then, M-miss 2B, as long as Rin is okay with it and YoRHa gives us all the help we need. I--aaagaaagghghhhhh! Oohhhhhh...man!~" Shirou cried out when he felt the sudden suction of 2B's lips surrounding his entire cock from the bottom of the tip only with her surprisingly moist tongue slithering around it from underneath. She kept her gloved fingers held around each side of his shaft from the hilt, gingerly stroking Shirou's length while steadily pumping the first couple of inches of his cock into her mouth as she eyed him carefully to gauge his reactions. 2B was determined to see how best Shirou would like it to further simulate his libido and make him ravish her as intended.

"Hhmmmhmnh...*Schluruppp...schluupp..schlurppp..schlurppp...schlurpppp..sllrp! Chup!* Mmnnhmmh....delectable, youthful, and full of vitality. I believe you may be an ideal breeder, Shirou Emiya. Mmhm...!~" 2B mouthed momentarily, rolling up her face from one side to another while having her tongue bathe nearly all over Shirou's dick in her synthetic saliva. He honestly felt she was as real as an actual girl, leading him to wonder just how advanced were Androids in the future if they could be nearly identical to a human being. So far, Shirou wasn't fully convinced 2B was an Android till he remembered her mentioning that she was techno-organic like all the rest of YoRHa. She bobbled her swerved her head fluidly, tasting Shirou's cock while keeping it in a vice-like hold between her fingers. Rin watched her stroking his cock expertly with a firm hold of her hands and it was quite honestly making the girl feel rather competitive.

She wanted to beat 2B at her own game and would decide on worshipping her boyfriend's cock as soon as she saw an opening. Right now, she was simply finished shedding off her pants and removing the rest of her red-lace undergarments, presenting her naked body to Shirou when he turned to look in her direction.

"Gnghghhh! Nghgh! mnghh! Tohsaka...! You look..aaahhh...so beautiful...! Mmnghmmm! Oohhh....my God, she sucks like a literal vacuum...! Guugghhh!" Shirou cried out, feeling 2B going even deeper to where most of her slimy, synthetic throat covered up half of his cock in its walls of moist flesh. She kept her tongue wriggling sensually around his length, furthering Shirou's growing lust while she squeezed her lips tightly around the base end of his shaft.

"Mmnmmb...mmmmnb..mmnbn..mmmnbnh..mmbhn! *Schllluuuupppp..schuooopp..schlupp! Pop!* There, I believe you are fully erect and riled up enough to goad into copulation.~" 2B said after sucking him off in lurid, long strokes of her oral flesh before finally popping her lips off with a smack of saliva between her lips. From out of the corner of her eyes, she noticed Rin was now naked as well and was currently fondling herself to the show by cupping one of her breasts in her hands with a hand between her legs stroking her pussy sensually. 'Hmmm, it seems she appears to become very stimulated with the act of voyeurism. Perhaps this arrangement really can work to everyone's benefit, though I will have to inform Commander that Shirou will not partake in doing the same to all the other female Androids in the Bunker just yet.'

She looked up at him from below, seeing him pant and exhale excitedly as though his blood was boiling from the inside. His cock was also angrily twitching with need, showing 2B its engorged and letting her take notice of how thick his bloated-looking balls seemed to be when she looked at them from below. She deemed him ideally healthy for breeding and could perhaps copulate for hours on end, guaranteeing pregnancy for certain. Nodding to herself and scooting back to where she was back on the bed, 2B rested her rump on the comfortable surface with her legs spread wide in a suggestive pose. Shirou's eyes became widened with desire as he watched her reach down to slip open the bottom of that leotard piece covering her sex, revealing her pussy to him in full.

The soft, velvety flesh of her labia looked as pure and 'real' as any normal woman's could. 2B didn't have any pubic hair above her mound, for obvious reasons, but she had a very tantalizing pussy just glimmering with moisture in its desire for his seed. Shirou felt compelled to obey its command and quickly pulled off his shirt while looking at Rin once again to see if this was okay. To Shirou's surprise, he saw the brunette ravenously stroking herself to the show and fondling her tits in tandem when giving him a blushing 'just do it' look.

"Go on, do it. Fuck her...then do me next, Shirou. Watching is fun and all, Lord knows it is for me, but.....I want to have your baby too, you know.~" Rin stated softly with a smile, making Shirou's heart melt a little as he finished pulling off his shirt and stepped out of his pants naked.

"Alright, Tohsaka, for you....both of you. I'm giving myself entirely to this...agreement we have, so get ready, 2B, because here I come." Shirou said with resolve, causing a fluttering inside of 2B's chest as she remained on the bed partially naked with her breasts exposed and her pussy now uncovered. She watched that lumbering rod of thick, male flesh bobble stiffly in his steps as he came to her with a hand gently nudging her chest so she could lay back. 2B obliged this and rested on her back with legs spread-eagle, anticipating a missionary position while Shirou placed himself above her. His cock was held above her sex readily and he planted one hand into the mattress closest to the right of her angelic face, looking at her with sexual desire in his eyes.

"Yes, as she says; do it. Do...me, Shirou Emiya. I've often been curious about how males and females copulated back then. So do me the honor of breeding me and allow me to assist you in breeding your girlfriend too.~" 2B said in a mist, alluring voice just before feeling the nub of Shirou's cock-head pushing through her sex with a shove.

*Squelcccchhh!*

"Aaaagggngnnhhhhh! Mmmggnhmm! Ooohh....such...intense sensation." 2B whimpered loudly, feeling the foreign sensation of something as large as Shirou's cock pushing through her silken slimy folds of synthetic flesh and stretching her out as he did. He started pushing to the waist, resting his pelvis between her thighs and feeling her legs climb up to wrap around his buttocks while Rin looked on with a perverse look of lustful desire in her eyes. She started stroking her sex even harder with her fingers twisting around her vaginal flesh, watching from a good angle that Shirou's cock sunk nearly inside of the Android woman's body.

Her back was arched and her breathing came out in hitched heaving inhalations for this was a new feeling for her entirely. While Androids could feel pain, albeit to a lesser extent, they could also experience a myriad of other sensations outside of the outlawed use of emotions when in battle. 2B was feeling overwhelmed and filled with a growing feeling of pleasure as she felt Shirou's cock pushing open her insides on its way to her synthetic womb like so. He kept their bodies aligned in a missionary position and started seeing 2B moan in loud breaths and groans of enjoyment as he began.

"Mmnhmmmghh! oohhhh....man! Uuggnhh! It's so slick, tight, and slimy...! Gnnghh! Here I go now, okay? You wanted this...you got this...! Uuuh..uuhh..uuhh..uuhh..uuhh..uuh.....uuh..aaammgnghh!~" Shirou grunted out loud, pressing his waist into 2B's crotch and feeling the soft pelting of her skin colliding with his while her legs kept themselves locked around his backside as they went along. In and out his member dipped into her slippery folds, plunging the external visage of her cunt as well as churning her synthetic walls from the inside in a rampant pace of pumping. His balls were slapping against her inner thighs and nether region, repeatedly 'spanking' her synthetic skin while adding a bit of spice to 2B's electric surge of emotions now welling up inside of her along with the sensitive pleasure.

2B brought her hands up to wrap around both sides of Shirou's hips at first, feeling him steady his rhythm as he pushes himself even further inside of her twat till she grabbed ahold of each of his shoulder blades from below. She was clawing at them gently and embracing him completely as she tilted her head back in fast-growing pleasure, becoming exhilirated with the sensation of his cock plunging into her sodden core with Shiro keeping a steady tempo of hips colliding into hers from above. He started moving increasingly faster with his hips staying perfectly aligned as he had taken 2B in a basic missionary position while Rin watches with unrealized enjoyment, feeling turned on when seeing her boyfriend fuck the Android envoy that had come out to get them.

She witnessed his tantric plunging of her core from afar, watching Shiro's immense dick sink in and pull out of 2B's increasingly squishy twat with moans now escaping the woman's lips like so.

"Aaahh...ahh...ahh....ahh....ahhh..ahh....ahh...aaaaagngnh...! Mmnghgmm! This is...aahhh..aahhhh...aahhh...so intense....and pleasurable...! Why...did I argue with the Commander before about this...? Haaahahhhhh! Uuh...uuhh..uhuh....uuhaaahahh! This sensation is incredible....!~" 2B cried out in ecstasy, feeling the slick squelching undulations of her pussy's walls churning around Shiro's massive cock just relentlessly pushing down into her artificial cervix on its way to pierce her womb. Supreme jolts of sensitive pleasure were now rocking her entire core and making her convulse wildly with convulsions, keeping her back curved with her thighs itching to wrap around the man's butt from below as he began bottoming out of her sex like a wild animal. Her folds clenched tightly around his length, goading Shirou into pushing down into her pelvis even harder, making her hoarse moans increase in volume while her tits bounced in swaying movements to every collision their groins made. They were going higher and farther along with 2B's lower body whenever Shirou would push into her below, this led to the noise of raucous skin-slapping coitus sounding off from inside of the makeshift camp Shirou and Rin decided to rest in.

Rin had a dark blush on her face as she continued to watch closely, crawling on all fours as though she had been hypnotized to observe. Her boyfriend's crotch just mashed into 2B's sex repeatedly with the young Clock Tower Mage bucking into the Android woman's soft body faster and faster every second. She could even see gushes of moistness coming out of her 2B's sex with groans now escaping Shirou's lips as well.

"Mmnghgmhhhh! I..I..never thought I'd get to..nngh...fuck a beautiful Android woman, much less have her ask me to give her my seed to reproduce the human race...! Uuagghhh! But If Rin is okay with it..then....ngghh! I'll be giving it my all, 2B! Here I go...! Uuaaahh..ahh.ahhh...ahh...ahh...ahh..ahh..aahh..ahh..ahhnngghghh! Fuuuucckk...!~" Shirou cried out, feeling the sinking feeling of 2B's soft, tightening sex pull him further into her twat as he began placing himself atop his kneecaps to steady his thrusts more potently. 2B took that as a sign to wrap her legs around his waist and clutch her leather-clad ankles together behind his butt, embracing Shirou completely as their genitals collided together with incessant coitus being met with moans and clapping noises between man and life-like machine beneath him.

Shirou honestly felt no difference in 2B's body from Rin's outside of the denseness of her weight and the remarkable flexibility of her pussy as it seemed to have clutched his member voraciously when pumping her womb. He was sure she had a womb since she felt real enough to compare to a real woman, though he could still hardly believe an Android could give birth despite what 2B had said to them earlier. Even so, Shirou felt compelled to prove her right and do exactly as she wanted him to do; impregnate her, then do the same to Rin as he was seeing the girl of his dreams pulling open her red long-sleeve shirt after unbuttoning it. She had a mesmerized look on her face as she had one hand down underneath the hem of her lower-body garments, stroking her womanhood to the show and biting down on her bottom lip when watching them.

"And I can't believe I'm getting so turned on by watching something like this..! Mmghghh! Guess I had a bit of a voyeur fetish all along because watching Shirou make this other woman go crazy with pleasure is really...auaahhh...really..mmnhm...making me so excited. I feel hot and bothered all over, I can't help but strip off everything I have on me right now!~' Rin thought to herself, hastily pulling open her red shirt and letting her perky yet modestly-sized breasts covered in red-lace brasserie spill loosely into the scenery. Shirou had his eyes on her the whole way and felt his cock harden even more as it dug into 2B's sweltering synthetic sex.

'Rin...! She's...getting excited watching me and 2B go at it like this? What a naughty girl. Hehehe....mngghhh! This Android woman...! She's...unbelievably tight and becoming squishier even as I go balls-deep inside of her! Uaagghghhh! She must be liking this....! And so...d-do I!~' Shirou thought to himself, turning his attention back onto 2B when his hips now power-thrusted into her frame from above with animated energy that Rin felt entirely titillated from watching. She hastily kicked off her lower half of clothing, removing everything to where she wore nothing except her dark leggings and beginning to shimmy out of them too while leaving her red long-sleeve shirt hanging off of her arms. Her brasserie was still on for the moment but Rin was getting increasingly hot under the collar watching her boyfriend fuck the Android woman's brains out with strong and swift thrusts of his pelvis.

She could even hear the subtle squelching noise of penetration coming out of her pussy as it greedily swallowed up Shirou's bulging length.

"Aaaahh..aahh....ahhh..aahhh..aahahh..aahhhh..aannghghhhh!! Mngghmm! Shirou..! Uuaahhh! Shirou Emiya..! Mmnhmm! I..believe I am achieving that sensation you humans get when reaching one's..mmngh...apex of pleasurable relief! Aaaaaaahhnnghghh!~" 2B cried out in ecstasy, showcasing her electric blue eyes quivering with emotion as she felt 'human' for the first real-time in her long robotic life. Every squeeze of Shirou's length that had burrowed into her womb had made her clutch his back even harder than before while her insides snugly clamped around his cock as he was repeatedly plunging in! It wouldn't be long now until she came and saw Rin, getting up to her feet with her brasserie being taken off and her matching red-lace panties being shimmied down her stocking-covered legs to where she could see every part of her body raw, making 2B feel Shirou release his seed into her gushing pussy after a few more tantric thrusts.

Apparently watching his girlfriend become naked while fucking another woman with her express permission and approval had been somewhat of a kink for him as well. Rin's nimble fingers from each hand had gone to her breasts and her pussy respectively, stroking and cupping both while watching the show with a flustered look of desire on her face. It was obvious she had next and that was perfectly fine with 2B since her Commander expressed a fervent need to have them reproducing right away.

"Gnngh..nngh..nnngh..nnghh..mmgh..mmngghghhghh!! Uaaaaahhahhh!! Ahh..ahh..ahhh..ahahhh....! I'm coming..! 2B! I'm..urghllk....going to blow! Hmmmbbnnm!~" Shirou let out with a thrust being delivered into 2B's frame, sheathing his dick inside of her sweltering pussy while it gushed with orgasm just in time to bring them together in a mutual release of pure copulation. His rigid, enormous cock throbbed powerfully after it sheathed itself inside of her womb and made 2B cry out in joy as she held him into her arms with a euphoric smile on her face!

"Hhhaaaaaaaaaaahh!~"

*Spplurrt..sppllurrt..sppplurrt..spplurrt....spplurrt..spplurrt..spplurt....spplurt!*

Thick, potent, gooey ropes of sperm flew into her unprotected synthetic sex with her womb becoming sloshing full of the stuff as Shirou held 2B firmly into his waist as he let out everything he had within his balls with his mind focused only on copulation. The sweet release of his member letting it all out inside of her 2B's gushing quim made Shirou groove into her frame even harder than before with their bodies shuddering blissfully together while Rin came to one of her fingers squeezing into her cunt and pushing up against her clitoris.

"Hnngghghhh!! Gyyaaaaaaaaghhhh! Mngghh! I got next, you hear me!? I got next...! I've...I've always wanted to have Shirou's babies myself too, you know! Uaaannghghh! Never thought seeing him rail another woman would be such a titillating turn-on for me! Mmmhhmm!~" Rin cried out, letting the gush of her naked pussy land partly on Shirou's face and a bit of 2B's body as they kept jolting their pelvises into each other for the rest of the duration that their orgasm took them. Much of his seed was spilling out from between the Android woman's legs and deep within her partially electronic mind she saw it happen; the concept of procreation beginning inside of her synthetic artificial Techno-organic ovaries.

Shirou's seed swarmed one of her eggs and began the process as she relaxed her limbs around his neck and his waist, collapsing underneath him with a soft sigh of relief leaving her lips.

"Status; Inseminated successfully. Mmnghh.....that was far more intense than I would've believed it to be, Shirou Emiya.  T-thank you...for agreeing to my request, the Commander will be pleased to hear this update to our negotiation. I shall requisition considerable supplies and arrange for transport to take you to the Bunker, but until then--" 2B was cut off by Rin at the second when feeling Shirou's massive dick leave her creampied cunt with a pop, watching as the red-headed boy turned his eyes upon the raven-haired girl now getting down on all fours in front of him and then turning around with her ass wriggling.

"--until then it'll be my turn...and yours too again if you're up for it. I won't stop until Shirou knocks me up too! And we won't be going to any Bunker Base just yet, we still need to wait here around this area of this world just in case our Harnesses reactivate and Master starts pulling us through. Relay that to your Commander, lady. But for right now, let's just enjoy having Shirou fuck us both until we're too tired to talk. Look, he's hard again, you see.~" Rin said, making 2B raise her upper half up to get a look and see his cock remaining as hard as it was before they began.  This sparked a jolt of light inside of her heart, making her give a small yet excited-looking smile for she realized that Shirou was far more virile and healthy than she realized.

'Oh my, he is in top form. This...shall be good news to give back to the Base when my time here is up, but I wonder if maybe it'd be best if I stay with them while I conceive our child. I still can hardly believe Androids of the YoRHa series can be able to reproduce. Whoever designed us in the first place must've had big plans.' 2B thought to herself, watching as Shirou stared at his girlfriend's perky and ample ass that was wriggling around in front of him right now. His dick was lurching hard and he wordlessly placed each of his hands around her soft, round hips while bringing himself closer to Rin as she remained in the doggy-style pose.

"Rin.....I'm crazy about you too, enough to want to pump more than just one child inside of you. I knew you had it in for me, but to jumpstart having a family...here of all places, maybe being here alone with our friend has made the sex-hungry maniac inside of you awaken. huh?~" Shirou teased, earning a pouty look from Rin as she stuck her tongue out at him playfully with a blush before wriggling her rump even more to excite his libido.

"Well, you know....seeing you exert your dominance over someone else is kinda exciting to watch, Shirou. I'm all yours in body and soul, and may forever be, so why not cut to the chase here and get started on giving me babies, hm? You've probably already given 2B one after all, let's see if you can give me twins.~" Rin challenged in an erotic, seductive tone as she felt the head of Shirou's cock prodding open her slick vaginal folds from behind. 2B remained seated upright on her naked ass, watching the show from her perspective and reaching down to caress the gooey sludge of sperm oozing out of her gaping cunt. Rin liked that she was looking this way and felt the sudden 'spreading' of her folds as Shirou pushed himself into her pussy from behind like so.

"Hmmpnbhbh!~"

*Squelecchhhh!*

"Gnngghhghh! Uuaaaaggngnghhhh! Fuuucck...! Shirou...! Mnngghmm! Every time we do something like this..nghgh..with protection...back at the Clocktower, it's easy to forget how much better it feels when we're doing it raw! Uaaagghhghnhh! Don't be afraid to hold back, go all the way and fuck me! Impregnate this body and bless me with children to coddle, Shirou! Uuaaaaaaaahhhhh!~" Rin let out, hoarsely moaning as she felt Shirou's rigid mast pushing deftly into her folds from behind as she rested her ass against his waist with fingers clawing themselves on the surface of the ground. She hung her head down at first, taking a moment to catch her breath as she felt  Shirou's cock pushing right into her cervix before beginning to retract from inside and push back in again.

He wasted no time with foreplay and started thrusting now with thick balls swinging into Rin's naked pubis from below.

"Here I go, Rin! Mmnghgh! Aaannghh!  Ahh..ahhhh..ahahh...ahhh..annnh..ahhn..annmnhhh! And I've forgotten how tight you are inside, especially how good it feels when we're doing it raw..! Haaa!~" Shirou let out, enjoying the gooey cusp of  Rin's pussy guiding him into her hole and clutching him with her folds tightening around the hilt of his shaft as he began the repetition of hips meeting together with the girl's supple buttocks. Clap after clap of coitus had begun with  Shirou meeting Rin's ass with fervent strokes of his hips slapping together with the girl's body from behind, with her folds clutching tightly around his  cock and her ass repeatedly meeting his crotch with incessant thrusts, the two of them began a new course of raw baby-making sex in front of 2B's eyes.

"Aaaahhh..ahhhh...ahhh...ahh..ahhh..ahhh..ahhh..aahhh..aaahh..aahh! Shirou..! Pull my hair..! Pull my hair and treat me roughly..! I like it when you fuck me hard like I'm some kind of whore that needs to be put into place! Mmnngh..mmngh...mmngh..mmngh..mmnghghhhh! Haaaaahhhh!~" Rin cried out, swaying on all fours with her tits jiggling salaciously with their movements while a smile of drunken pleasure showed on her face. 2B  wondered if she looked like that herself and started fondling parts and places of her own body,  stroking her mound to the clapping sounds of Rin's buttocks bouncing back and forth against Shirou's waist. The redheaded teenager obliged  Rin's request and reached over to grab a bit of her hair from between the twin tails she had that were tousling about to her undulating movements. He secured a hold and pulled her head back gently, making her whimper loudly from under her throat just in time for Shirou to bring back his right hand and send it smacking across Rin's doughy butt cheeks.

!

A loud slap occurred and Rin felt the tender stinging of her buttocks brought on by Shirou's hand,  making her shudder even more while her pussy clutched his cock more tightly than ever before.

"Aaaaaaagagghghhhhhh! Again! Again..! Mnghgmhh!  Uunh..ununh..unnh...unnh..unnnhhh! Spank me, Shirou..!~" Rin cried out as her body started undulating faster with her frame swaying more energetically for she was fucking herself back onto Shirou's cock. She was feeling it drill her insides even faster, making most of her moans rise in volume as she felt her insides clutching his cock in desperation. She looked back over at him from over her shoulder again, seeing with glee that Shirou obliged her request to spank her ass even more.

"You got it, Rin! Here...it comes! Ummhh!~" Shirou said before backhanding the girl's heart-shaped rump in a loud 'smack' of flesh followed by another and another with Rin mewling loudly every time.

*Smack...slap...slapp...slapp!*

"Aaangrghghhhh! Mmgnghhh!! Yes...! Oohhhh..yes! More, Shirou....! Mmnghghh! Uuh..uuhh...uuhh..uuhh...uuhh..uuhh..uuhh..uhh! Uuuaaaaaagghh!~" Rin cried out, closing her eyes and letting her mouth hang open as they raucously collided groins with each other whiel  Rin could feel the squeeze of her pussy making Shirou's meat lurch while inside of her body. She could feel it throbbing heavily as it churned in and out of her vaginal muscle, making her walls curdle and writhe around his rigid shaft each time Shirou pushed himself to the waist with a grunt escaping his lips. He kept pulling her hair, giving Rin a bit of pain to enjoy and ensuring that 2B could see that look of depraved enjoyment on her face while her tongue threatened to spill out of her mouth.

Raucously their bodies rolled together again and again in a voracious exchange of flesh rutting into more flesh, genitals to genitals with 2B feeling increasingly charged up for more of the action as well. The pale-haired Android was watching Rin's face twisting into various expressions of ecstasy while she felt Shirou slamming away into her from behind. The jiggling of her buttocks became faster and more voracious as the two of them became frenzied with lust, leading to Shirou slapping his hand across Rin's buttocks some more with some additional brutality.

"Aaaanghgh..nnghghhn...aahnngghh..*Slap...slapp...slap*...mmgghhmm! Rin! I'm getting close..! Uuaaagghghhhh! Uuh..uungh..unngh..unngh..uunnggmhhh! I love the way your ass jiggles when I strike it...! Mmggnh! And you're twisting up around me right now as well...! Unghh! Let's cum together...Rin..!~"Shirou let out, grunting breathily as he sheathes his mast inside of Rin Tohsaka's cunt where its slimy vaginal walls clustered and clenched tightly around it as he continues slapping her mound with his balls while 2B watches the entire time.

She was starting to understand everything about how sexual pleasure feels by envisioning herself in Rin's place and seeing things from her point of view. She guessed as to how pleasurable she was feeling right now and it made the Synthetic woman want more as she watched Shirou dominate her twat while still slapping his hand right across her ass. 2B moved closer while on all fours, whimpering quietly with her eyes flickering with newfound feelings of lust and fascination and watching the bottom of Rin's groin push outward by Shirou's immaculate cock.

Seeing it made her rather anxious for rounds two and three and more even though she still had no idea where the future was going to take her after today, especially considering how she was given her directive to have Shirou's child conceived within her body. Suffice to say, 2B felt she had completed that goal and was now watching Rin's face contort into various expressions of mind-blowing pleasure with the young man grabbing her hair with his other hand and tugging it roughly to match the slamming of his pelvis intensely into her ass!

"Uuunngh..uuaah..auuugh..uaughghh..uuaaghhh! yes...Shirou yes..! Mmnnghmm! I like it rough...like that..! Mmgnghmmm! Uueaaaahahhhhhh! Ahh..ahh..ahh...ahh..ahh..aaahhhhhh! Make me cum and then..cum lots inside of me..! Give me a baby, Shirou..! Yessssss..!  Ahhh..ahhh...ahh..ahh..ahh..ahhh..aahhhh!~" Rin cried out in ecstasy once again, feeling the stretching of her walls deliver jolts of pleasure up her spine and throughout her body as she repeatedly pressed her ass against Shirou's hard waist. The feeling of her pussy stretching out to sheathe itself onto his cock, allowing Shirou  entry into her womb gave Rin plenty of baby-having fantasy  ideas she thought she'd never have back in her world

The woman tilted her head back a little, allowing Shirou to use her twin tails as reins for him to tug on more effectively. Her body raucously twerked back and forth on all fours with the doughy flesh of her heart-shaped ass slamming and clapping against Shirou Emiya's thundering pelvis. Her insides were becoming increasingly sensitive, therefore gushing all over his rod as he continued bottoming out of her pussy for what felt like ten minutes going on to fifteen with Shiro never holding back.

In and out that thick rod went, churning Rin's insides and making her cervix sputter in reflex as it tugged strongly on his cock after exiting her womb only to go back into it again. She noticed 2B from out of the corner of her eyes, masturbating up close to them with her gloved fingers furiously stroking her synthetic cream-filled pussy while one set had cupped one of her perky breasts to the show. Watching the beautiful Android woman observe them in fascination made Rin feel even more turned on for she had never had a voyeur before, and the idea of sharing Shirou with another woman who wasn't Luvia certainly titillated the bi-Sexual Mage greatly. That's right, Rin was easily into guys but she had an open mind and a more promiscuous sense of adventure when it came to being forward with other women. Not that she's had the experience thus far, but she certainly considered pleasuring 2B alongside Shirou and then pleasuring him together with the Android woman who was currently fingering the pool of his seed dripping out from inside of her pussy.

"Mmngghmmhh..mmgnghm..! Uh..uhuh..uuhh..uuhh..uuhh..uuh..uuuhhhh..!! Rin..! Mnghm I'm getting close..! Are you sure you want me to knock you up....? Mnghmm! I..I always loved you....and I want....2B to be with us in this world, not only as our bodyguard and tour guide but also as part of the..nghgh...growing family..! Uunnnnghghh! You're beginning to squeeze me tightly...! I think I'm going to blow very soon, Rin!~" Shirou let out, raucously hammering away into the woman's butt to the point waves of impact surfed across her creamy cheeks. Rin was feeling Shirou go deeper inside of her pussy to the point of hitting the very edge of her womb and almost up to her diaphragm itself. It may have been hyperbole in her mind, but it was apt to the description of how she felt right now.

She lowered her top half down a bit, huffing and panting loudly with a euphoria-stricken smile on her face that saw a bright future ahead of her here with Shirou in this ruined world. In the back of her head, she was convinced they'd never get back to their world again, but starting new here with a new wave of Pseudo-human Androids while having Shirou plow her into motherhood was alright in Rin's book. If anything, it may have been something of a dream come true.

She turned her head to the side to look at him from over her shoulder, smiling lovingly at Shirou while he continued clapping away with his lower body, repeatedly drilling her quivering hole for all it was worth as they both quickly approached orgasm together.

"S-Shirou..!  Yes..! yes to all of it..! I want to be here with you..! For however long it takes, bearing your children...and maybe keeping 2B at our side as a secondary girlfriend for you to fuck along with me..! I want us to be together...! So yes, cum inside of me...! Let me have all of it so I can..nghgh....give birth..nmghhmm...to our baby....! Uuaaaaaaahhhhhhhhh!~" Rin cried out, tossing back her head and feeling Shirou aggressively pull her rump onto his crotch in a rampant repetition of bodies of flesh pounding together as she came with a wail that reached the skies! Her entire body shook, her breasts jiggled voraciously as her pussy clutched, convulsed, and tugged hard on Shirou's cock right after he pushed himself to the brim and gave in to the bliss of coitus with his girlfriend.

2B's eyes widened in awe, showing those electric blue eyes sparkling with inspiration as she watched the human push into the pussy of the human woman, professing his love to her and groaning loudly as he feels the release he had been waiting for.

"Aaaaaaaggnngghhh! I love you too, Rin..!  Mmmmmhh! Here it comes..!~" Shirou growled, leaning over a bit to spoon Rin's backside as he emptied out the contents of his balls inside of her fertile pussy like so. Every squeeze of her vaginal muscles would milk out more of his cum from his balls, giving 2B one hell of a show as she quickly scurried around behind Shirou's body to see his testicles repeatedly flexing with release while Rin's folds gushed up a messy storm of juices below.

*Spplurrt..spplurrt..spplurrt..spplurrt..spplurrt..spplurrt..spplluuurrtttt...spplurrtt!*

Rin clenched her teeth in a wide, toothy smile while clawing at the surface of the floor of the dilapidated building they were on as she felt the thick amounts of sperm flooding her uterus en masse. Her womb was undoubtedly filled to the brim, making her groin swell and her body quake even more with euphoria as she felt 'pregnant' already just like 2B. Even without her usual Magecraft abilities on hand, Rin's instincts told her that the Android woman was indeed pregnant with his seed. And she was going to be the second person to bear Shirou's child. He spooned her backside intimately, grinding his pelvis into her ass as he let out a minutes-long ejaculation deep inside Rin's womb for a long, long time until Shirou was finally spent for good for the time being.

"Hmmmnnhmhh...! I did it, I did it. We...had sex...and are...going to have a baby...here in this crazy world. Oooohhh..man, that felt incredible. Mmnhm...!~" Shirou groaned quietly into Rin's right shoulder after he finished cumming inside of her and became mildly flaccid for right now. 2B had a wicked idea to share with Rin just as soon as he became relaxed and started recuperating, one that spawned inside of her semi-digital mind the moment she pleased him earlier with her body before mounting him and draining him of his seed. It was odd to say that maybe 2B felt like she was becoming human herself in a way, not that Androids were adverse to having sex with one another, but more often than not they avoided it altogether.

He pulled himself out of Rin's snatch with his cock, slightly softened, leaving behind a thick gooey trail of sperm while Rin also slumped down into a spent heap with a goofy smile on her face.

"Ooooooghh...yeah. Yes, we did indeed. Oooohhh...I'm going to be sore for a while, but I regret nothing. Hehehehhe.....I wonder what Sakura would think if she saw us now.~" Rin thought to herself before crawling over to cuddle next to Shirou who had been closing his eyes to take a recovery nap for the time being. She was about to promptly pass out as well until she saw a coy smile cross 2B's face as she saw the Android woman pointing at Shirou's crotch suggestively. She gave her a wink and Rin, more or less, understood that she wanted to pull something on him while he slept this off. "Heheh, okay...I'll humor you. It's nice to finally see you acting a bit more playful rather than stern and emotionless. Welcome to Humanity, 2B. And welcome to Motherhood too since Shirou probably put out so much inside of you that you're likely processing a bun in the oven."

"It is very likely, Miss Tohsaka, and I am eager to try again as many times as it takes if I am not, by chance. Take a moment to recuperate yourself while I inform YoRHa command to send support carriers down here to provide optimal shelter for the time being. I wouldn't suggest flying up to the Bunker if we are carrying children after all.~" 2B explained and Rin nodded in agreement before slowly closing her eyes and passion out as well, leaving 2B all alone. The Android brought one of her fingers up to the built-in communication device on her right ear and contacted YoRHa command, specifically Commander White with a hopeful smile on her face. "Come in, YoRHa Command. This is Battle Unite 2B speaking, I would like to confirm that the mission...*rubs her belly*...is a success and I request fortifications for a make-shift base be brought down here immediately. I....will be staying with the two humans as their protector for the time being and once I give birth, I would like to continue to serve alongside these particular humans Rin Tohsaka and Shirou Emiya for some time."

...

"Acknowledged, 2B. It is probably better for you to stay there regardless and keep watch of the only humans left in the world. The more you help them produce offspring the better and I'm quite certain that we have plenty of female YoRHa volunteers who'd like to offer up their bodies to the cause, but for now...stay with them. That's an order.~" Commander White expressed, leaving 2B to smile warmly to herself as she crawled up to cuddle next to Shirou and Rin, ready to wake up ahead of time and give the man something that is called a 'wake-up double boob-job' with herself and Rin stimulating him enough for an early morning romp.

"Understood, Commander, orders happily received."

.......

Dozens of sperm cells fluttered towards two separate eggs within two distinct bodies and breached the membrane protecting the core, implanting themselves inside of each which quickly began the process of life forming from inside of their wombs.

End of Chapter

To Be continued...?

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