*Story Posting!* Please Your Goddess- FGO- Chapter Two-Shirou Emiya x Ereshkigal for M (Complete) , Ishtar (Patreon)

Working on Number II of the posted WInners for tonight, funnily enough its another Fate story. Stay tuned, everyone.

How to Please Your Goddess

Fate Grand Order

By Azure/For M 

Chapter Two- Appeasing The Sister Goddess of the Underworld (Ereshkigal)  

*****

Having watched it all through the eyes of her sister Goddess Ishtar, and reluctantly feeling the joy in their expressions as they had locked lips and fondled each other's bodies till they were rutting about in sexual frenzy, Ereshkigal's eyes were ablaze with envy and determination. The Goddess of the Underworld had just finished rewatching the scene of her sibling writhing about naked atop Shirou's masculine frame, moaning in ecstasy constantly while her head was thrown back into the air and all while Ereshkigal herself fondled her flesh to the show. She hated to have to pleasure herself by proxy of her spoiled, vain, perpetually rewarded sister Goddess Ishtar while she was down here in the Underworld bound to it forever outside of occasionally borrowing Ishtar's body like she did when she first met Shirou Emiya. Alas, this was as close to him as she could go for right now and it made the blonde's body sizzle with ever-expanding lust and need for Shirou's. She was imagining herself in Ishtar's place, feeling his frame jutting heavily into her soft flesh while making her croon with euphoric delight as she did with her. it was such a raw and powerfully arousing scene that she couldn't help but rewatch it a tenth time in her mystical vanity mirror while seated back on her bed with a hand between her legs and one cupping her breasts through her clothing. Ereshkigal, the Goddess and Steward of the Underworld crooned helplessly in futile desire as she plucked her hands back and threw them onto the top of her head in frustration before letting out an exasperated sigh.

"Aaaagghh! Its just not fair..! This is not enough, no...! Not by a long shot....waaaahhh..! Why does she get to have everything given to her like Emiya-Kun's love and feel the..shudders..passionate lovemaking that it comes with? Uwwaaahhh...! Not fair, not fair, not fair...!  Hmph!" Ereshkigal, an analogous Pseudo-Servant Divinity in the appearance of Rin Tohsaka just like Ishtar yelled aloud in a child-like tantrum. 

She grabbed a pillow from somewhere on her bed and stuffed her face into it, screaming loudly in a girlish wail of aggravation for a good hard minute while she was all alone in her bedroom. Around it were the azure blue, rocky walls that surrounded her outside of the one doorway leading out into the rest of the dark and bleak Underworld she governs. The only sources of light in her chambers were the usual Soulfire Lanterns that hung about all over the ceiling, showing Ereshkigal's bedroom with all the rustic furnishings befitting her theme as the Ruler of the Underworld here in this Babylonian Singularity. She was wearing a dark and gold outfit with a tight one-piece portion covering her torso, letting her long legs spill out with one of them being clad in an elegant legging of black. Ereshkigal had on a gilded circlet around her neck dotted with a few golden skulls befitting her image and authority, she had a crown atop her head and glittering garnet-colored eyes just like Ishtar with her bodily proportions being the same. The only difference between them is the one of power since Ereshkigal was the Ruler of these dark lands, meant to usher souls of the dead into a blissful eternity of the afterlife whereas Ishtar was a Goddess who was capable of great firepower and flight.

It was another reason she resents her sibling aside from having Shirou Emiya in her palm. Even now, she was seeing Ishtar brag about how good he was in bed much to the red-faced chagrin of King Gilgamesh's secretary Siduri and Emiya's Demi-Servant Mash Kyrielight. Merline merely laughed to himself in amusement while making some crude sex jokes to the hapless Chaldea Master while he stood there in silence feeling embarrassed.

"Hey hey now, Emiya-Kun, if you ever need any extra help taking the Goddess 'around town' as they say, I could always lend you some of my personal enhancement materials like a Vitality Body made of Succubus essence. I am a male Incubus after all, so I would know just how amorous a woman can be when she's as giddy as Ishtar is right now. Just think about it. Wink.~" Merlin said, making Shirou feel more embarrassed while Mash tried getting in between Emiya and Ishtar just to break up the shenanigans of Ishtar brazenly feeling up her Master in front of everyone.

"No..! Get off of my Master, you...! Uughgh..! Senpai...please tell her to let go of you...! Now's not the time for this....!" Mash stammered, trying to pry off the lustful Goddess and getting into a glaring match with the woman while Ereshkigal heard one more thing from her mouth that sparks the fire in her belly. "Oohh...why can't you be more dignified and patient like Ereshkigal-san? You're far..too..ngh...clingy with my Master...!"

....

!

Just then, Ereshkigal remembered the day she first met with Shirou under the guise of Ishtar quite a while ago when she got to know the last Master of Chaldea a bit and fell in love over the time she watched his adventures with the others. 

"Hmmm, why can't she be more like me, eh? I suppose I could use that spell again to...inhabit Ishtar's body once more...or I could go a step further with that new one I just made." Ereshkigal began with her voice rising in amusement while a soft grin appeared on her face. She moved the pillow off of her head and sat upright with newly invigorated determination, watching as Shirou and the others stepped out of the Grand Palace as their business with King Gilgamesh was concluded. She was seeing him walking down the steps with Ishtar at his right side, curling her arms around his elbow while Mash Kyrielight tried to wrestle Shirou away by doing the same with the other one. Merlin was behind them watching in amusement while Medusa Lily was simply uninterested in their lover's affair.

Secretly, Ereshkigal was feeling thankful that Quetzacoatle was not present and was out laying waste to swaths of Demonic Beasts with Jaguar Man, meaning that Shirou would only have Ishtar and Mash close by while tending to their usual non-battle affairs around the city of Uruk.

Standing up from the side of her bed and running a hand through her elegant burgundy cloak, Ereshkigal brought a hand up to her chin and watched as the Chaldea crew went down into the city with Ishtar nuzzling her face closely into Shirou's side without shame. Ever since they had sex with Shirou managing to satisfy a Goddess, while also surviving having his pelvis crushed, she had clung to him like a fly to glue paper. She was even rubbing her chest into his bicep while swiveling her hips side to side in a sultry style. Ereshkigal clenched her fists and started cackling comically to herself in a maniacal manner as she reasoned with her impulsive thoughts one last time before coming to a decision.

"Alright, I'll do it. She doesn't get to have Emiya-Kun all to herself like she has everything else; gold, Jewels, and freedom....! No, I fell in love with him too and it is with us...that I stake my claim on his heart as well, even if that'll leave me with a bad conscience for a while...I still want it. Hmph. Hope you'll like being in the interior of my bedroom while I take your place, Ishtar because its turn for you to learn how to share for once in your life. I've never gotten to know the touch or feel of a man at all while you fly around flaunting that scantily-clad body of yours in everyone's face." Ereshkigal said to herself, bringing her hands together in a circular motion and channeling all her Dark Magical energy into her palms to begin channeling the Spell that'll grant her the wish she sought to have for so very long. It only took a long time to get right with all the many verses of chanting to recite while concentrating her Mana through it to make it work.

In addition, Ereshkigal had never wanted to use such a dirty trick in the first place since she cares for her sibling despite having her skewered many times over on her first couple trips through the Underworld before. Now they were on good terms with each other, more or less, and it would be only this time that the Goddess of the Underworld decided to take something for herself. That 'something' being Shirou Emiya's touch as well as the rest of his body into her own. This would be the upgraded version of the previous spell she used, but if it meant getting to have Shirou fuck her while Ishtar sits down here in time-out for an evening then it would be worth it.

"Alright, time to recite the verses correctly while concentrating on what I want. I know she's probably going to hate me, but I want...no, I need to feel Emiya-Kun's touch and experience life above on the surface. Here I come, Shirou Emiya, enjoy my sister in the meantime. She won't be getting to have you to herself in the night that comes. Hee hee.~" Ereshkigal said to herself when looking into the mystical mirror which showed Shirou and her sister splintering off from the group after everyone decided on what today's activities would be now that there weren't any Demonic Beasts to take care of. 'He's so...cute..and daring, and courageous. I can't wait to have him in my eyes, even though I'll be looking like Ishtar the entire time. At least this time it'll be my body and not hers that'll feel it.~'

*******

Back up top, where the City of Uruk flourished in one of the rarer, peaceful times between attacks by the Goddesses who were now their allies and the endless scourage of Demonic Beasts that came to wreak havoc from time to time, the people were enjoying a peaceful day of joy and life. Particularly, one very frisky Ishtar as she gleefully pulls Shirou by the hands over into an empty alleyway between two buildings somewhere south of where they were going...

...

"Hee hee, come on, Emiya-Kun. I haven't had nearly enough yet, you know. That needy little Servant of yours, Mash, will have to wait her turn if she's going to act on those feelings of hers for you at some point. As a Goddess, I tend to know these kinds of things, but for right now, I get you all to myself.~" Ishtar said with glee and a sly voice as she pulled Shirou into the alleyway away from everybody else who was celebrating a flower gardening festival with Mash losing sight of her Master. He was wearing his usual Chaldea Mystic Code for this Singularity which was a dark coat worn on top with sleeves rolled back, an orange scarf worn around his neck, and white outdoors pants thrown on.

"Hey....hold on, aren't you getting just a little too frisky right now, Ishtar? Ngh..! It's not like me to leave Mash out there on her own, you know." Shirou voiced his complaint, albeit in mild annoyance for he was distracted by Ishtar's ass wiggling side to side from inside of that thong-like bikini bottom that served as her outfit as a Servant. It was still jarring to this day to see Rin's face on a powerful, beautiful, Goddess Servant like her yet here he was feeling glued to her half-naked figure as she let go of his hand and presented herself against the wall in front of her. She posed provocatively by putting her hands above her head and wriggling her slender yet highly seductive frame a bit as she ran them down her body like a showgirl. 'Hmggnhhh! Damn it..! She knows I can't resist her when she does things like that..! We only just started becoming an item yesterday and now I'm dancing in the palm of her hand...! Mnghm..!'

Ishtar sensed his frustration as well as noticed he was becoming aroused already from the sight of his crotch bulging outward from within his pants. Shirou winced with amber eyes darting down to his appendage rising to full strength and then between that and Ishtar's body as though wrestling with his urges out here in the public eye. Granted, nobody could see them clearly unless they were coming down this alleyway right now, but the risk added to the thrill that made Ishtar considerably hornier every passing second. She slid her right hand down her legs and leaned over just a bit to allow her left set of fingers to tug down her gilded top.

Out popped her breasts in all their lush, bouncy glory with Shirou feeling the last bastion of resistance crumbling away. He needed to have her right now.

"Of course, I've never gotten it from someone as good as you..and it makes this Goddess hungry for more. Maybe if you keep 'injecting' me with Mana supplements from Shirou Jr down there I might become super energized in fights, making your job here in this Singularity easier, hm? Think about it, Emiya-Kun. If you please me..then I will go above and beyond to please you. Come here and take me already now, wil you?~" Rin asked the last part with a sultry gaze, running a tongue across her lips as she reached down to her hips when standing back. She trudged down her bikini top and revealed her slick, tight-looking pussy to Shirou before sliding it off of her feet and presenting herself against the wall when turning around. 

She planted each of her hands against it while spreading her legs apart. She spread them apart while sticking out her ass rather inelegantly, shaking her hips side to side while Shirou marvels at her pussy just as he hypnotically undid his pants in the haste of his fingers.

"S-sounds good to me when you put it that way! Hngnghh! I can't believe I'm going to do this out here in public..! If Mash catches me, Ishtar...!" Shirou led on in worry, hearing her only giggle at him while wriggling her hips some more just as his cock sprung out of th confines of his white pants. Ishtar's garnet-colored eyes widened when seeing that thick footlong mast out in full completely erect. Shirou's balls remained as thick and firm as ever and his rod looked every bit as thick as it did when he first fucked her the other night. Her insides were quivering with need already as he anxiously checked the sides of the alleyway before lining himself up behind her. He put his hands on her waist, griping her hips firmly as he slides the tip of his cock straight into the gooey cusp of Ishtar's folds. She reached down underneath her to spread them open to further his delight and felt her divine flesh become speared by the immaculate rod that is Shirou Emiya's cock. "Hmgnhm...!~"

Sqquelch!

"Aaaahhhh! Mmnhmhh! Oohhhh..yes..! Aaahhh!...Oh, how I've missed this sensation already...! Nmhmm! No need to hold back, Shirou. Give this Goddess everything you've got.~" Ishtar said as she felt him sliding through her silken folds, spreading open her pussy once again in ways that no amount of 'finger time' could ever do for the Goddess of Fertility. She was starting to breathe heavily now as she felt Shirou's cock push a third of itself inside of her, raw, and felt him pulling her rump back even further to where her butt pressed into his crotch as he allowed more of it to go in.

"Hnnghhhhh..! Ishtar..! Aahh..! I'd better make this quick before anybody comes by here..! Unnghh! Here I go, alright? Sees Ishtar nods her head slightly before tossing it back a bit. Hmnghm! Uuh..uuh..uuhh..uuhh..uuh..uu..umgnhmm!~" Shirou began bucking heavily into Ishtar's buttocks, letting his muscular hips crash into the doughy peach of her ass while feeling her insides squiggle and squeeze tightly around his cock with absolute pleasure. He could already feel the sheer tightness of her slippery walls wrapping around his length and with her Divinity, it was almost like they were made of iron. Regardless, Shirou felt absolute bliss in feeling Ishtar's twat sucking him and squeezing everything around the sides of his road once he began bottoming out of her in a hip-slapping tempo. 

Gentle slaps of flesh began echoing out as Shirou started fucking her from behind into the wall, making Ishtar huff and pant endlessly with a euphoric smile on her face.

"Yeaaahhh! Yessss! Mmgh..mngh..mngh....mngghh...! Shirou..! Aaahh..aahh..ahh..ahh..aahhh..aahhhh...! Ram into me even harder...! Do it, make this Goddess yours for keeps..! Ooohh!~" Ishtar mewed softly with ecstasy, biting down on her bottom lip as she felt Shirou's immaculate rod piercing her divine vaginal folds once again. This feeling never got old to her no matter how many times they've mated like wild animals inside of that bedroom, she couldn't get enough of it and had a feeling that her sister Ereshkigal would be jealous if she saw them.

Oh, how little she knew.

Her fingernails raked the surface of the wall in front of her while her buttcheeks were beginning to clap harder into Emiya's waist, feeling his cock plunging into her sodden hold faster and faster with direct thrusts made solely on the weaker parts of her cervix for added pleasure. Her body started writhing a bit in with undulation. Her tits were jiggling salaciously with every bodily movement her chest made while Shirou simply held his hands firmly around her sides to keep her directly aligned with his cock, every clap of flesh echoed off the walls of the alleyway they were in and Shirou just kept on tunneling his cock directly into utterly divine flesh. Ishtar's pussy always felt slick and tight, never losing elasticity nor feeling loose in any regard despite Shirou's size. The face she made while feeling his manhood tunnel into her core made him growl into her right shoulder as he bucked into her even harder, feeling turned on when seeing somebody with Rin's likeness make this kind of face at him. She turned her head to the side to flash a sultry smile and run her tongue around her lips as she reached back to wrap an arm around his neck in further intimacy with each other.

"Hhahah..ahh..aahhh..aahhh....Ishtar..! Mnghmmm! You look s-s-s-o beautiful like that....! Nnghh! uuh..uuhh..uuuhh..ughhhhnnh! I hate it when you twist me around your finger like this though, I hardly get any time to focus on our mission in this Singularity...ngghhhhh! You temptress...! Damn, you...for having such a lovely body...and s-s-such a frisky nature...!~" Shirou grunted between huffs of breath as he pushed his cock directly inside of her cunt, feeling the stretchy squeeze of her vaginal muscles beginning to wring his cock in preparation for their climax. Ishtar could sense he was getting close after minutes of nonstop, passionate rutting that was leaving her insides broiling with sexual need. She tightened her hold around the back of Shirou's neck and brought him closer to her face, leading the young Master to press his lips against hers in an over-the-shoulder lip-lock that Shirou gratefully received as he speared his cock into her ravenously like so.

"Mmnhhmhhh! Ahhhh...! Ah..ahh...ahh...aahh..aahhh..sllrp..shlurpp..sllrpp..Shirou-Kunnn! Mnghhhh..!" Ishtar mewed loudly, alarming Shirou more and more as she felt her insides begininng to quiver with ecstasy the longer his cock dug right into her womb. She could feel every thick inch of it pushing through her divine flesh, skewering her sweet spot and making her snatch cling tightly to it as if her life depended on it. Her buttocks clapped into his waist even faster as the minutes on with various Uruk citizens passing by the alleyway without anyone being the wiser of what they were doing. 

Ishtar's tits jiggled incessantly and bounced ever higher with each passing strike of Shirou's hips, she was quickly getting close to cumming her brains out once more and removed her hand from around his backside so she could place it back against the wall to steady herself. She hung her head with coarse breaths leaving her lips consistently, moaning and grunting with pleasure while Shirou steadily approached his orgasm unaware that a certain Underworld Goddess watched them with a thumbnail being chomped between her teeth in frustration.

"Guhh..! You just have to have it all, don't you, sister?! Grr! Just wait, the Spell is almost ready, and knowing you, I'll be able to sleep with Shirou-Kun as well before you know it. And..hehehe, you'll be trapped here where I live for the duration of it all the while. Oohhhh..I can hardly wait. I can hardly wait indeed.....to feel Shirou-Kun's body underneath my own, but until then...I have to sit through this." Ereshkigal said bitterly to herself, watching with almost perverse fascination as her twin sister Goddess felt the skewering of Shirou's cock right through her system, to the point he pushed the tip out from within her womb. This briefly made Ereshkigal wonder if it was possible for someone like Shirou, who was a Mage and a Master of Chalda, to impregnate even a Divine Pseudo-Servant like them. It never occurred that it could happen at all, but part of her honestly wished for it as though she was making a wish upon a Holy Grail.

She continued watching through the mirror and noticed that Shirou's Demi-Servant partner Mash was looking around for him, preparing to cross by the alleyway where they were currently in the throes of pleasure and at risk of being discovered. Such a thought about their fun being spoiled honestly titillated Ereshkigal just out of spite for her sister, but truly, she was enjoying this scene like it was pornographic entertainment. When it involved seeing Shirou's immaculate cock in the flesh, the Goddess of the Dead could never turn away from looking at it with hunger.

.....

"Senpai...! Where are you? Ishtar...? Are you out here with Master....doing 'that' again?" Mash asked as she called out to them from the bustling city center close to their alleyway romp.

Shirou heard her voice from the distance and proceeded to speed things up, reaching down underneath Ishtar's groin to stimulate her exposed clitoris with a quick incessant tweezing with his right hand, causing the Goddess to moan loudly into the wall's surface as she was about to succumb to another mind-blowing orgasm with a smile. As a result, her cunt clenched down around Shirou's length with her cervix beginning to aggressively tug on it with desperation. He was beginning to thrust his crotch into her butt even faster to the point their bodily collisions sounded like somebody clapping.

"Uunughhh! She's close to finding us right now, I do not want to hear it from Da Vinci-san all over again..and have her make some kind of high-tech Chastity belt for me. She can do that, you know..! Speaking of coming...I feel like I'm close now, Ishtar..! Aaanngghhhhhh! Uuh...uuh..uuhh..uuhh..uuuhhhhnghghhh! Inside again, right? Mnghmmmhhmm!~" Shirou asked between labored grunts of exertion as he proceeded to feel the slick squeeze and tug of his dick brought on by the force of her divine twat. Every modicum of Ishtar's pussy was stroking Shirou's meat to a grand finish as he pressed himself into her from behind a dozen more times in rampant succession with Ishtar raking her nails across the stone surface of the wall, wanting to bite down on something as she felt her eyes roll backward once her orgasm hit her like a haymaker from Quetzocoatl...!

"Aaaahhh..aaaahhhh..aaahahhhhhhhhhh! Shirou-Kunnnnnn! I'm..cumming..! Gaaaaahhhh!~" Ishtar cried out before biting down on her lips and shivering incessantly with orgasm, bringing Shirou to a grand finish inside of her as he felt the force of her pussy squeezing his cock causing him to explode deep within her womb. Ereshkigal had been masturbating furiously to the show with two fingers dipping into her own virgin sex, imagining herself in her sister's place as Shirou was seen pressing his crotch firmly into her buttocks with a shuddering motion.

"Mngghmhhhm! Uunnhhhh!~" He groaned into Ishtar's right shoulder as he felt the orgasmic relief of ejaculating deeply into her pussy full-stop.

Spplrrrrtt..sppllrrrt..spplrrt..spplrrt..spplrrt..spplrrt!

Ishtar felt the force of his sperm flying into her uterus like a force of nature, not being concerned she'd be pregnant from it since she assumed that as a Divine entity cohabiting the body of a Servant and a human would negate the possibility. But as Shirou unleaded thickly inside of her sweltering pussy, feeling the squeeze of her cervix draws out more sperm every time, she started to feel something strange going on with the surface of her groin. Ishtar had her eyes closed as she savored the bliss of coital release with Shirou, unable to take notice that a glimmering tattoo mark appeared over her groin in the shape resembling Shirou's Master Seals.

"Unhh..unnh....unhhhhh! Mnhmhh! Oohhh..yeah, that's the stuff this Goddess needs and deserves. Mnhm....oh Shirou-Kun, I can never get tired of this and I'll never give it up. Hee hee hee, you're this Goddess's prized sex toy alright, and someone she hopes to stay with once your mission is over. Somehow...." Ishtar trailed off somewhat sadly toward the end of her sentence, briskly shuddering once Shirou pulled out his cock and quickly redid his pants to look normal for Mash.

"I like to think you will, Ishtar. I mean, you're a Divine Servant and a Heroic one at that, plus there have been other Servants who've helped us during the other Singularities that come over to Chaldea when I summon them. I believe...that you'll be one of them too someday." Shirou said, easing her fears as he sees the sperm oozing out of her pussy before she bends down to pull back her panties up. Incidentally, this covered up the mark on her womb for right now and Ishtar gladly resumed hooking her hands around Shirou's right elbow as they walked out of the alleyway to reunite with Mash.

"Awww,  you always know exactly what to say to your Goddess, Shirou. Hee hee, I can't wait for later tonight once we finish with all of this tedious community service. A 'Servant' isn't some lackey who does chores like this, they fought battles after all." Ishtar said in a huff, earning a soft laugh from Shirou as they walked out of the alleyway and resumed their duties to King Gilgamesh for the rest of the afternoon.

Meanwhile, back with Ereshkigal who had just down her fingers after retrieving them from her insides, letting the moistness of her juices seep from her digits after she finished cumming all over them to the fantasy of fucking Shirou herself. She arose from the bed, crossing her arms in a huff and leaving her golden panties on the floor for the time being, eying her sister with annoyance the entire time.

"Hmm, hearing her gush about how happy she was has soured the mood, even if my plan is one hundred percent guaranteed to work like last time. I just wish it wasn't taking so long." She pouts and lays back on her bed, feeling bored as she continues to watch the special Gold and Black Hourglass nearby continue its charging process. It was designed to make her Spell successful and keep it that way for a full day and it works in conjunction with her Magecraft with the only downside being the waiting time till it was ready. 'I can wait, after all...'ll have Emiya to myself for the whole night. If I'm lucky, we won't even have to go anywhere private since Gilgamesh will send Merlin, Medusa, and his Servant out on more stupid errands. All I gotta do is wait for the right moment and-ah...!'

Ereshkigal widened her ruby-red eyes with delight as the golden aura surrounding the special Hourglass finally solidified, meaning it was ready for her to use.

'Yay...!'

*******

Back over on the surface world, after a series of multiple Community Service affairs the Chaldea crew engaged in for the rest of the day, Shirou returned home to supposedly get some rest with Ishtar seemingly doing some reconnaissance outside of the barrier walls of Uruk.....

The Goddess of Fertility and Beauty flew above on Maana, her mystical Archery Weapon and means of mobile transport, as she overlooked the entire city to find that there was no Demonic Beast to be found outside of its walls. It was a hum-drum night for a change where everybody was safe and the only thing around to do while the team slowly corrected this Singularity by preparing to face Tiamat and Kingu in the future was tedious Community Service for King Gilgamesh. Ishtar wasn't having any of that and flew down toward Shirou's residence here in the city, finding that he was all alone after he returned early to get some much-needed rest for the day. The sun was setting and Ishtar was feeling peckish for some more 'fun' with her favorite lover right now, getting ready to bring out something to help rejuvenate his body as she had known he was winded for the moment. 

"Goodie, he's all alone. No annoying Demi-Servant or perverted Wizard this time to hamper our fun, it'll just be like last time when I had him all to myself.~" Ishtar said to herself, floating down on Maana toward the house Shirou was currently residing in and gracefully landing on her bare feet outside before pushing her way in through the day. She knew it wasn't locked since she was on their side now, but she considered locking it with Magecraft to prevent anyone from intruding on them and ruining their fun. "Helloooo there, Shirou-Kun. Miss me already?~"

Shirou was lying face-up on the bed in the bedroom when he noticed her, feeling a bit of the energy he had drained out of him already since he knew what she wanted. The woman was all about sex and having him all to herself ever since they first copulated here in this very building not too long ago, but Shirou was feeling too ragged from today's events to want to humor her.

"Hey, Ishtar, I'm going to guess what you're here for and say that I can't do it anymore today. I don't have unlimited stamina and doing all those things for the people of Uruk has me ready to sleep it all off. And I know taking care of your needs requires a lot of strength and endurance too." Shirou said, chuckling nervously as he hoped this would excuse him, but knowing that Ishtar is partly Rin, he felt that it wasn't going to slide at all. The Goddess's personality was likened to Rin's ambition and competitive drive to win as well as take what she wants even if it meant twisting things around in her favor.

That is why she grinned like a cat and manifested a rather large gourd from out of nowhere using her Magecraft abilities as a Servant. It just materialized in a series of golden motes of light and was presented in her hands with a cheeky smile on her lips when she brought it to him.

"That's why I brought this.~ Right here is Ambrosian water that'll help restore your vitality and stamina to absolute completion with a bonus in making you feel charged up for the entire day. It only works on mortals, of course, but it should be giving you all the energy you need to want to pump me full. And I know you'll want to once I do.....this.~" Ishtar said with a sultry smile, running her tongue along her lips as she lifted up her top to present her firm round tits to his face naked.

"Gngghhhh! Damn you, Ishtar..! You know what that does....to a guy like me...! Ooooghh..!" Shirou groaned as he felt his cock lurch and harden at the sight, feeling conflicted between obeying his primal desires and following through to wanting to resist her charms. Ishtar didn't wait for him to comply and simply poured the dipped edge of the gourd toward his face, allowing that sparkling liquid to spill down Shirou's throat before he had a chance to protest. "Grrrghghghhhhh! Cripes..!Gulp..gulp...gulp...gulp..mgnhmm!" 

He woke up drinking it all and feeling as though his entire body became supercharged with raw power, causing his muscles to feel refreshed and his lack of stamina non-existent as he bolted up to his feet in front of a giddy Ishtar. His cock was rock-hard and poking out through his white pants connected to his Mystic Code outfit, feeling ready to ravish the woman once again as she took a few steps back to where she planted her butt on the window sill and tossed the gourd aside.

"Now you're feeling better and ready, plus that rejuvenating divine energy will make you virile to the point you'll need to empty out your seed inside of something like a compulsion. How about we do something different to start us off this evening with, hm? I was thinking of....letting you ravage the ass of a Goddess.~" Ishtar said while licking her lips and pulling down her panties once again to reveal her naked sex and peach of an ass while keeping herself rooted inside of the stone window sill with a smile. Her legs raised themselves up readily, waiting for Shirou to take her against the window before ding her on the bed. "Come and get it, Shirou.~"

"Yes....I will...! Mnghmmm! I can't believe you'd force some magical water down my throat just to do this. I am not your sex toy to play with every single minute of the day, you know. Even though I am crazy about you..." Shirou voiced as he hastily undid his pants, pulled up his shirt from over his head, and walked over to present his thoroughly hardened erection to the Goddess's eyes. She squealed giddily on sight and made sure to raise her legs high while sticking her rump out towards him till he grabbed ahold of her hips to keep her in place. His cock, in all its enormity, bulged with new vitality and he lined up the tip with the smooth pink pucker hole of her ass while Ishtar propped herself up on her hands planting themselves on the windowsill. 'I guess it's a good thing that everyone else is doing that entire Festival idea that Medusa and Quetzalcoatl pitched earlier today, otherwise, I'd have to deal with Mash getting between us and Merlin probably making sure everybody was watching us somehow. That guy is such a lecherous person, but then again....so am I when it comes to Ishtar. I wonder if her sister is the opposite of this sex-addicted girl.  Hmmphhh!~'

Plop!

"Aaahhhhhhhhh! Ooohhhh! Fuck..yes..! Mnghghhh! That's the stuff...right there..! Uuaahahhh!~" Ishtar cried out in ecstasy and slight pain as she felt the insides of her asshole stretch stiffly around Shirou's cock when it pushed through. He pushed only the tip and a couple of inches inside of it, causing her to shudder immensely for this was a whole new feeling for her right now. The position she was in atop the windowsill only made her feel more of it and it left the Goddess speechless with ecstasy, bringing her to latch a hand around the back of Shirou's neck as he pushed more of it into her anus.

"Hmmnghghhhhhh! Fuuuuck..! Ishtar..! Your ass is something else...! Nnrrrghhh! I'm going to move now, okay? Oohhhh....wow, this is something else..! To feel the ass of a Goddess squeezing me like this..! Mmhgh..mmngh..mmngh...mmngh..mmghghhh!~" Shirou started grunting heavily, pushing his waist forward and feeling the soft surface of Ishtar's thighs and ass pressing against his pelvis from below. Her legs remained to stick out over the shoulders of this man now rutting feverishly into her slimy anus, enjoying the sensation while Ishtar cooed pleasantly with delight. The warm, damp feeling of her asshole sucking half of his cock was something else entirely as it made Shirou blind with lust right now.

He held her firmly by the waist, keeping her safely held in his hands as she remained hoisted on his bucking pelvis with her anus being plunged by the man's cock in a grooving tempo. Soft, hefty claps of flesh echoed out into the air with Ishtar's labored grunts of ecstasy constantly coming out of her lips as this went on.

"Ahh..ahh...ahah..aahh..aahh..aahh..aahh...Shirou..! Mmnghmhhmm! Aahhhhhhhh! It feels so good..! Sooooo....good! Dont stop fucking me, even after you've come. I want it more, and more, and more....! Uuaaahhhhhhhh!~" Ishtar cried out, bringing both hands behind his neck as she allowed Shirou to carry her fully within his hands. He lifted her a little so that her flawless ass was no longer resting on the windowsill completely and instead, pressed her lower back against it as he started fucking her harder.

In and out his cock went, plunging wetly into her anus to where the Goddess was undulating wildly against his frame with delight. Their bodies meshed together with incessant claps of skin leading Ishtar into another haze of sexual pleasure as she pulled Shirou onto her lips for a deep, erotic, tongue-swallowing kiss that he was compelled to receive while fucking her faster.

"Mmnhmnhm...sllrpp..shlurpppp..sllrp..sllrpp.mnhmm! Uugh..uuuh..unngh..mnghmm! Ishtar..! Aaanghh!~" Shirou moaned into her mouth, feeling the slick and slimy orifice of her anus begin squeezing him tightly at a very gradual pace while this went on. Soon enough, Shirou began bucking more intensely into her rump, enjoying the soft and supple flesh of her ass as it kept bouncing rhythmically against his pelvis the more he threw it into her from this position. Ishtar was having trouble keeping her grip going as she held onto the windowsill for dear life while losing herself in the pleasure all the while. Her tongue languidly rolled around his mouth, wrangling his tongue in a sensual yet feverish saliva-drinking exchange that made Shirou mew loudly in response as she couldn't get enough of this man.

"Hmmnhhmhh..Sllrpp..shlurppp..sllrrppp...shhhuuupp..Shirou....! Mnhghh..mmnghh..ngh...mngghhh..mmh..mh..mmh..mnghghmmmm! I'm getting close...! Aaaahhhhh!~*" She wound him moaning into his mouth between wet kisses, often muffling her words as she couldn't bear to be without Shirou's lips glued to her own. Ishtar was head-over-heels in love with this man and wanted him all to herself for ages to come, regardless of how or when this Singularity will end. She brought one of her hands up to wrap around the back of his neck, leading Shirou to exert more strength in carrying the slender Goddess in his hands. Her legs remained bolted outward from above his shoulders as she could feel his massive cock plunging deeply into her anus. 

Such a foreign, intense, passionate rutting inside of the one orifice she had never pleasured till now had Ishtar's brain turning into mush. Were she not swallowing Shirou's lips into her own, she'd be smiling a goofy grin of pure intoxicated ecstasy. She was beginning to feel her asshole tighten some more amid the ongoing flesh-clapping coitus they were indulging together. Clap after clap, again and again, Shirou kept plunging his thick cock directly into the divine asshole of the Goddess Ishtar and gradually felt her insides clutching it strongly the harder he pushed it in. It was as though he was plunging the insides of her body with how rough yet precise he was, making her croon loudly from inside of his lips as their tongues mingled messily together before she threw her head back in euphoria.

"Aaaaaaahhhh! Aaahahh..aahh...aahhh..aahhh...aaahhhh! Oohhhh...Shirou-Kun! Shiroouuuuuuu! Aahahh! Mnghmmm!~" Ishtar brought her other hand up from the windowsill to begin stroking one of her breasts to the ongoing motions of their bodies clapping together. She bit down on her bottom lip and started squeezing her eyes tightly together as the intense rush of orgasmic release was well on its way to flushing throughout her system. Her eyes peeled open into a half-lidded smile of utmost devotion and lustfulness when directed at Shirou, showing him just how crazy this  Goddess of Beauty and Fertility was for the lone master of Chaldea. "S-S-Shirou...! I'm getting close..! Oohhhhhhh...God! It's...it's....going to hit me hard..! Like a tidal wave..!  You...you're plugging my ass so...much... so intensely..! It feels...gooooddd...aaaaaahhhhhhhhhhh! Oohhhhh Shirou..! I'm cumming...!~"

Ishtar threw her head back and at the same time, Shirou clutched the Goddes's thighs and ass tightly together from within his hands, gripping her firmly as he felt the tinder squeeze of her rectal cavity as she gushes in orgasm all over his crotch! His dick felt the squeeze of her anal muscle and it was causing Shirou to grunt stiffly from behind his clenched teeth, leading to him bucking into her just a few more times before shuddering in orgasm himself..!

"Hmngghghhhhh! Ishtar....!Uuunngghhhhh! Here..I come...! Hmphhh!~" He said while holding her close and enjoying the feel of her incredibly soft skin pressing against his as he felt his cock lurching stiffly from inside of her ass, sending thick ropes of sperm directly into the woman's bowels..!

Spplurrt....spplurrt..spplurrt..spplurrt....spplrrt..spplrt....spplrrtt!

Ishtar felt the rush of sperm flooding into her body once again, this time from her once untouched asshole as she felt the goo of his seed filling up her anus right away. It was such a foreign sensation and it made her shudder briskly in bliss, shivering again and again as they let out their orgasms together with each other's arms.

'This feels so good...! Ooohhhhhh! It was positively divine...! Yes..! I could get used to having Shirou-Kun fuck me like this...! Eeeeaaahhhhhhh! If only Ereshkigal could join in on this somehow...! Uuughhh! I'd hate to be her and be missing out on this....!~' Ishtar thought, shuddering incessantly in sexual release while unaware that a certain Goddess of the Underworld stood ready in front of her large body mirror with her hands glowing with golden energy. They were magically linked to an extravagant Hourglass nearby which brimmed with radiant energy connecting to both Ishtar'sand her own Spirit Cores, ready to trigger a certain 'Displacement' effect upon her command.

....

"And once he's done pulling out of her, that's when I make my move. Ah--! There..! Shirou-Kun is...setting her down gently by the windowsill now. Perfect...! Oohhhh....and here's still hard too! Here I come, Shirou...!~" Ereshkigal said to herself excitedly, gushing like a young girl as she tapped into Ishtar's Spirit Core and chanted the Mantra to her Spell of Displacement. 'I won't be missing out on this anymore! Uuaaah....!'

With a flash of Golden light blinding the area, the Spell was activated to absolute effect and with certain 'additions' made that had a certain Goddess of Beauty blinking in surprise a few times as she stared back at her reflection in a large body mirror somewhere that felt dreadfully familiar.

....

"Eh...? W-what...where....?! Huh...!? How in the Hell did I get here?! This is Ereshikigal's room, isn't it...?!" Ishtar asked herself as she stared at her reflection once her post-coital fever trip wore off and she was suddenly standing in a dreary bedroom somewhere that she'd never consider living in herself. It looked like the interior of someplace in a dark, soulless, cavern filled with dark teal-colored rocks and carrying an air of Death all around her with a series of blue-lit torches nearby.

She was standing inside of Ereshkigal's robe holding her shoulders and wondering just how or when this happened while she was enjoying sex with Shirou Emiya again. Her long, silken hair was now blonde yet the mirror showed her still having it black since the Spell only swapped Spirit Origins around. Ishtar's face was still the same despite the two being twins, yet Ishtar wasn't in her usual clothing at all and she felt her powers change to become far more oppressed than when she toured the Underworld the last time she was. 

Swiftly checking her sides and looking around in a frantic frenzy of utmost agitation, Isthar's twin tails pointed outward in fury as she realized what her sister had done and grabbed her head with a howl.

"Eyeeaaaaaahhhh! Ereshkigal, you bitch..! You switched places with me again, didn't you...!? Uughhh! Of all the times...! And of all the nerve too! You could've just asked me and we could've worked something out if you felt that strongly for Shirou-Kun, you know..! Grrghhhh!" She howled loudly, throwing her hands up in the air in a comical, tantrum-throwing manner as she stomped around the dreary bedroom in frustration. Wearing Ereshkigal's usual accessories as well as her more concealing clothing truly didn't suit Ishtar's taste, she was visibly disgusted and greatly annoyed as she plopped down onto the other Goddess's bed with her hands really wanting to grab somebody to strangle right now. 'Hmmmm, she must've felt strongly for Shirou too if she did this. This...Displacement Spell seems stronger than the last one she used and ...if I'm right...she probably plans to spell all night over there, wearing my face and using my body. Was she that much in love with Emiya? To even...do this to me? Hmph, bitch....! I can't wait til it's over and I blast my way through the Underworld again just to teach you a lesson, but for now...fine. Go have your fun, you little....!"

Ishtar, despite her frustration with Ereshkigal just now, felt impressed by the blonde's tenacity in scheming this little trick just to get some time alone with Shirou. On one hand, she was happy for the girl finally getting to experience the love and 'magical' sexual affinity Shirou had when it came to women, but on the other hand, Ishtar hated being taken for a loop by none other than her Sister Goddess.

"Well, nothing to do except kick back and just relax here. At least the bed is comfortable enough...." She muttered bitterly to herself.

*******

Opening up her eyes again and looking out at the world with sunlight, fresh air, and greenery with life being abundant all over, Ereshkigal realized she was now in her sister's body after the Spell had successfully worked. She was set down gently by the windowsill just after feeling Shirou's cock pop out of her gaping asshole, leaving the Goddess to shudder briskly in response for the feeling was still fresh. Ereshkigal had to lean against it as she looked back over her shoulder at the beauty of Uruk once more, and then she looked back at Shirou who had his erection still retaining girth even after all the rutting he did with Ishtar earlier today.

'I did it, I'm here...! The Spell worked perfectly and it seems that...Shirou-Kun doesn't recognize that it is her yet either. Hee hee...! Oohhhhh..he's still raring to go too, and I'm going to enjoy this to the fullest while I'm up here..with him. Sorry about this, Ishtar, I'm sure you're probably seething angrily right now...but finally there's something I truly want that I can get, and I am certainly doing whatever it takes to get it.~' Ereshkigal reasoned with utmost delight and giddiness as she took a moment to recuperate while her ass healed on its own. Being a Goddess, nay a Divine Entity attached to a Servant's body made her vitality and physical prowess above anyone else's in the world. The feeling of sore pain left her buttocks quickly as she nursed one side of her rump with a smile, looking at Shirou lovingly as she bounced off of the windowsill to provocatively lay atop the bed. "Shirou-Kun....would you please...make love to me now in a more...romantic way? We've been..ahem... going at like animals this entire time so how about we do things a bit more intimately, yeah? Like say, reenacting our first time together in this bedroom?~"

"Huh, Ishtar....that sounds like a good idea. You normally want it so rough and...drag me off to ride me against my will sometimes if I have things to do for my mission, but certainly. I don't mind doing things more romantically with you. Do you happen to remember how we did it at the start? I think it began more with you getting on top of me and seducing me right on the spot, this time I'd like to be in the driver's seat this time around if that's alright.~" Shirou proposed, making Ereshkigal bristle energetically with excitement as she quickly checked her reflection in a nearby tableside mirror to make sure her face and hair resembled Ishtar's. There was always a chance her hair could flicker back to blonde if she wasn't careful like last time when Shirou first spoke with her in the forest, but now she was sure her disguise was safe.

She rapidly nods her head with a loving smile and lies back onto the bed completely while Shirou begins crawling onto it toward her with his eyes leering at her with a suave smile, completely charming the Underworld Goddess all over again.

'Eeeeeeeeeeee...! This is turning out even better than I had hoped...! Oohhh, come and take me, Shirou-Kun. Please...make love to me all night long. I can only pray that Merlin, Mash, and the others don't come back here anytime soon and ruin everything.' Ereshkigal thought to herself as she brought her hands up to Shirou's allowing him to interweave his fingers with her own as he let the thick rod of his member caress her inner thighs, causing her to shudder briskly upon contact. This perplexed the man just a little since it felt like she was experiencing their first time all over again, but ultimately, he put any thoughts about her reactions behind him as he leaned down to wrap his lips around hers in a deep kiss.

"Hmmnhmmhm...sllrp..shlurpppp.....sllrp..mnhmhhhgh...Sllrp..mnhm. Ishtar...~" Shirou mewed into her face, feeling his eyes close as he hungrily swallowed her saliva once again, albeit with Ishtar kissing him back more tenderly than before. The Goddess moaned softly into his mouth, spreading her lips apart so that their tongues intermingled in ways more sensual and more romantic rather than erotic. This was a nice change of pace for Shirou as he began to exert more control over this situation, he started clenching his hands around hers tighter and started swallowing her tongue a bit more with newly added vigor. Ereshkigal was over the moon with delight right now as she curved her spine a bit from underneath him, pushed her naked breasts out, and slid one of her legs along the surface of his thigh as they got more heated up with each other. Her tongue elegantly swiveled around his own in a myriad of swift, slurping strokes that allowed Ereshkigal to savor every moment of this as things gradually progressed. 'He's such a splendid kisser...mhmhmm...! Ishtar doesn't know how good she has it by having this man ravish her the way that he does. Oohhhh...!~'

Closing her eyes and basking in the moment as they spent another five minutes making our hungrily with each other and drinking each other's saliva while Shirou's dick pressed against her folds, Ereshkigal felt now was the time to experience what she had been missing out on. Lurid suckles of lips came about in moist engagements of suction for another minute till she pulled her lips back and gave Shirou a knowing smile while nodding her head.

"Please...go ahead and put it back inside of me. I'm begging you, Emiya-Kun.~" She was giddy beyond life as he started leaning back, spreading open the woman's legs with his thighs and aligning the tip of his cock with her folds for a direct push of his waist. Shirou had to retract one hand and guide it in securely, making sure that the tip nudged the opening of Ishtar's sex when he realized something.

"Hmmm, you seem...as tight as you were before when we first fucked, but then again...I think it must be an aspect of your Divinity, right? Because every time we have sex you always seem as tight as you were that day, only now you feel....a little tighter...almost like a virgin. Weird, huh?~" Shirou pointed out and Ereshkigal, beginning to panic a little, shifted her eyes from side to side pretending to be in the dark about what he was talking about. She had forgotten that her chastity was absolute even when it came to switching bodies, so she hoped Shirou didn't realize anything about this switch-a-roo as he pushed himself in. "Hmnnghghh!~"

Squeeellecch!

"Eeeeyyaaaaaaagghhhh! Unghghh! Oohhh! Shirou...! Mnghmm! Yes..it is..a Divine attribute of ours..to always rejuvenate our bodies..as well as regrow our hymens if we happen to be Goddess and Servant rolled into one. UUaaaaahhhhh!~" Ereshkigal lied as she felt the intense pain of surrendering her cherry to Shirou's immense dick as he pierced her insides all the way through and drove in deep inside of her folds. Her legs kicked up into the air with feet lurching about wildly as she felt him go balls deep, causing her body to shudder incessantly with sensation. 'He is so big..! So long...! It feels..so painful yet it also feels very good..! Uuaaahhhhhhhhh! Oohhhhhh! This is what I've been missing out on all this time! I do not regret sticking Isthar in my place as I take control of her sex life here..! Mhhmm...!~"

The slick visage of her pussy covered nearly all of Shirou's length as he pushed through, resting his groin directly above hers as he pressed against her body from above in a basic, vanilla missionary position with Ishtar's arms sliding up to wrap around his neck. It was a heated moment where he felt the slick sliminess of her tight, virgin folds swallowing up his cock all over again as he got re-acquainted. It was such a profound feeling to have a Goddess's womanhood clench tightly around his cock, let alone take their innocence which made Shirou begin to rut heavily into her from above with smooth undulating motions of his waist.

"Hmnghghhmhh! Here I go..! Uunnh..uuhh..uuhh..uuhh....uunn..mnghm..mnghhhh! Christ..! Ishtar..! Aaahhhhhhhnghhh!~" Shirou cried out softly as he felt the powerful Goddess's divine womanhood clutching his cock even tighter as he went along bucking into her waist with gradually increasing force. It was in and out that his meat went, plunging into her sodden wetness while the moisture from her twat lubricated his shaft to allow for more motion. Shirou was becoming possessed by pleasure as he felt the woman's twat clutching him tight, guiding his primal instincts as he began quickly bottoming out of her in the way that she always wanted. Their lovemaking was still slow and passionate for the most part and Ereshkigal was loving every minute of it as she felt Shirou's length bottoming into her womb.

"Aaahh..aahh...aahhhhh..aahhh..aahhhh..mgghhh! Shirou..! Shiroouuuu! Mnghh! Uuh..uuhh..uuhh.uuhh...uhh..uuhh...hhahaaahhhh! K-keep going slow..! I..I want to savor this..! I love everything about you! Everything...! Uuyaaahhhh!~" Ereshkigal let out as she curved her spine a bit more, causing her tits to scrape against Shirou's pecs as he continuously bottomed out of her pussy when her legs began crossing behind his neck. Shirou found it odd how she was behaving yet was still blinded with lust and sexual need for release that he paid Ishtar's mannerisms no mind at all as he dove in to start kissing up the surface of her neck. He could feel her shivering intensely with ecstasy as he drove his cock deeper, touching the back of her womb after pressing it so far it bypassed her cervix and made her insides coil tightly around him in response. 'He's in so deep..! Sooo deep inside of me..! If I was a regular human, I'd probably become pregnant with his child if he decides to unload it all inside like how he does with Ishtar..! Mnghmm! Uuhh..uuhh.uuuh..uuahh! This is everything I dreamed it would be and more..!~'

Together they rutted about feverishly atop the bed with Shirou's buttocks rising and falling with every hard thrust he made between Ishtar's legs. They clutched tightly around his backside ankle across ankle with him feeling the slick squeeze of her pussy guide his instincts into going wild. He nipped at her collarbone and ran one of his hands along her upper right thigh, embracing her completely as she held onto him with fingernails digging into his back.

"Nngh..nghh..nngh..nngh..mngh..mnghh...mghghhhh! Ooohhhhh...you feel so tight right now, Ishtar..! Uunghhh! You sound so...cute today too..! This is different from how aggressive you are..earlier today in the..nghgh.. alleyway, but I'm not complaining..! I love everything about you...and will please you as many times as you want...! Ahh..ahh.a.hhh...aahhh..aahh..aahahhhh....! Speaking of which, I may be coming soon too because your pussy is squeezing me so tight..! Uuannghh!~" Shirou mouthed into the crook of her neck, kissing it some more as he held onto Ishtar's waist for dear life using one hand to wrap around her backside and the other to hold her waist into his rocketing pelvis. 

His dick plunged in and out of her sodden sex completely with increasing moistness coming out of her folds for the duration of twenty long, utterly euphoric minutes of passionate lovemaking till he felt Ishtar's pussy clench tightly in an orgasmic blitz of explosive proportions. Shirou had pushed the head of his dick directly into the back of her womb, causing the Goddess to curl her spine sharply as she let out an almighty scream of ecstasy and elation with her lips curling upwards into a drunken smile.

!

"Eeeeaaaggghhhhhhhhhh! I'm cummmiinnngg...! Ooooohhhhhhh! Shirou..!~" Ereshkigal cried out, shedding tears of happiness as her entire body writhes in orgasm underneath this stud of a mane. Her pussy clenched and squeezed around his cock voraciously, milking the man for his cum which she received in plentiful amounts after Shirou buckled into her body a few more times before he came next.  He pulled his cock up one last time to the tip and proceeded to slam everything down inside of her convulsing pussy before feeling the rush of sperm come gushing out.

"Uunghgh..unngh..unghghhh! Here it comes..! Gaaaghh!~" He grunted into her neck and held onto her body as he felt the incredible squeeze of divine vaginal muscle suck everything out of his balls. Thick ropes of sperm flew straight into Ereshkigal's body with absurd amounts of it readily filling up her womb and to an extent drowning out her uterus in the process.

Spppllrrt..spplrrt..spplrrt...spplrrt..spplrrt..spollrrt....spplrrtt!

She wrapped her arms around his neck real tight and made her eyes reflect glowing little hearts as she held onto him for a while longer, enjoying the reflexive action of her pussy taking in and sucking out all of Shirou's sperm into her depths. Little did she or Ishtar know that his seed was actually having a profound effect on their bodies, namely their wombs since they were still both Pseudo-Vessels whose vessels had been human before their Ascension as Divinities. Shiround ground into Ishtar's waist some more, letting every ounce of sperm he had at the moment come out for well over a minute until he was done.

"Guah...! Hot damn..that was..intense..just like our first time too. Whew..hehehe, are you still...wanting to do more, Ishtar? Because..seeing you all sweet and innocent just now reminded me how cute you are..and I'm ready for a bonus round if you'll have it with me.~" Shirou asked after he pulls his cock out of her sodden insides with a wet splotch of moisture and sperm, letting the latter spill out en masse when Ishtar suddenly shot up and switched around their positions to where she was now on top.

!

"Ugnhh! Yes..! I am ready, Shirou-Kun! I want to do it more with you...! Heheheh..!~" Ishtar let out, running her tongue across her lips as she gave Shirou a hauntingly bedazzling smile of utmost desire when grinding against his waist. Her groin pushed up against the stiff underside of his cock which, to her great surprise and delight, remained hard even after all that. Shirou became surprised by how energetic she seemed and noticed that something felt different, or rather 'off' by the Goddess of Fertility as she reached underneath her body to grab ahold of his member and guide it right back into her twat. 

Feeling the slick visage of her opening swallows his dick back up again, Shirou let out a guttural moan of pleasure as she presses herself down upon his crotch completely with her pussy sheathing around him from above. A loud, slick squelch of penetration followed and he found his member wedged snugly into her sex with her slimy walls clutching it deeply as she pressed herself thoroughly into his crotch in a cowgirl-style position.

"Nnngh! Uaaaaggghhhhhh!! Oooohhh..yes! Mnghmm..! This is...positively divine, it feels even better when it's like this..between us, Shirou-Kun..! Mnhmmhmmh! Hehehe, just lay back and let me do all the work while you stay comfortable, okay?~" Ishtar said with delight, briefly letting her hair flicker from dark to blonde for a brief second in front of Shirou's eyes as the woman slowly rolled her lower body forward then backward, beginning to ride him fervently with her weight making sure her pussy encased its walls all around his cock.

For Shirou, it felt different in some strange way or another even though Ishtar never hesitated in trying out different positions for them to have sex in. This felt different, she felt different, and Ereshkigal was enjoying every second his cock slid past her walls to the inside of her pussy until it reaches her cervix. She was feeling full of cum already from the round they had before this one, but the blonde Goddess of the Underworld wasn't done with just one round of raw baby-making sex. She wanted Shirou all evening tonight.

"Mnghhhh! Uahhhhh! Ishtar..! Nnghhh! You feel...a lot more aggressive today..! Nghhh! I like it..! Mhh..mnhh..mnhh..mnghh....mmmngghh...! You're so cute right now...unghhhhh! Aahhhh!~" Shirou let out, enjoying the slippery walls of a Goddess's pussy sliding down his crotch again and again with Ishtar beginning to groove her hips into his groin even faster with her thighs hugging tightly around his sides. Her feet curled up and her tits jiggled voraciously around in front of his face as she leans forth with hands planting themselves into the pillow just outside of his head with eyes gazing upon him with utmost love inside of each red orb. 'T-that couldn't have been my mind playing my tricks on me, could it? I could swear I saw..ngghh....Ereshkigal just now in Ishtar's place...! Nnghmhhh! Oohhhhh..! She's...really channeling the beast today...! Ungnghhh! And yet she's acting so sweet...and adorable rather than being haughty and demanding..! Uunghh!~'

'Ohhhhh..! This is everything I knew it could be but more..! Uuaahhh..aahhhh..aahhhhh! Emiya-Kun...! Mnhmhhmm! I love you so much..! Uun..uuhh..uuuh...uuaahh....auuhh....aahhh..uuuahhh..aaaaaahhhhh! You're all mine...and I won't let Ishtar have you all to herself from now on..! I'll do this as many times as I like to from here on out...! Mnhmhhh! You're just so hard and it never seems to want to go down no matter how many times you come..! Ohhhh..Emiya-Kun....!~' Ereshkigal thought with her garnet-colored eyes glowing brightly with mystical power inside of them. She was smiling happily when leaning close to Shirou's face, continuing to hump and bounce her pelvis atop his groin in a series of intense flesh-clapping sounds that seemed to pick up in pace the longer this went on. "Uuhh..aahh....ahh...aahh..aahh..aahh..aahh..aaaahhhhhh..! Mnhgmmm!~"

Shirou's hands went up to grab onto her soft hips from the side, digging his fingers into that smooth flesh of hers as she virulently undulated the lower half of her body into his crotch. In and out his cock went, submerging itself into the incredibly snug depths of her incredibly soft pussy where her cervix was there to greet his member with a consistent squeeze around the neck of it. Shirou could never get used to how good it felt when that happened and simply tilted his head back in response, moaning ever blissfully in soft guttural moans as Ishtar rode him for dear life. Her tits were bobbing salaciously in front of his face with the woman making sure she was close enough to run her hands through his ginger hair, breathing heavily as she raucously impaled herself on his cock.

The slick, ever continual coitus between divine flesh and Shirou's Mana-reinforced rod which had its natural levels of above-average rigidity continued incessantly with Ishtar's hips riding higher and higher. Ereshkigal could see herself in one of the mirrors off to the side which showed her blonde hair tousling about as she rode Shirou's body in her sister's, doing so without a care in the world and loving how good it felt. She made sure every inch of his length scraped her walls on the way to her womb as she twerked her naked ass repeatedly, wriggled her hips into his crotch, and enjoyed the immaculate rod of the man she loved burying itself into her babymaker while Shirou was none the wiser. She truly felt bad for deceiving him like this, and she would certainly confess later that it was her, not Ishtar, here in this room riding him, but for now, all the Goddess wanted was to have him all to herself. To the Underworld with the consequences of her actions, seducing a mortal was not taboo in any rights as Ishtar was guilty of having him all to herself.

"Mnghgh..! Aahh..! Uuh..uuh..uuuhh...uuuh..uuhh....ammgnghhhh! Ishtar..! Ishtaaarrrr...! Uunghhh! I'm getting close..! Gngghhhh...! I want to see your cute face up close...! Gnh..come here..!~" Shirou grunted between laborious groans as he felt the slippery hole of her pussy beginning to cluster tightly around his cock after fifteen intensified minutes of mindless rutting. The woman's body knew no limits and Shirou had already tested his body's threshold many times by now with satisfying her sexual hunger, but he would make sure to have her cum before him as he was now thrusting upward to meet her bounces. Bringing up his hands from her hips to grab onto her face, gently grasping her cheeks and pulling the goddess onto his lips, Shirou locked his mouth onto hers for a fierce kiss. "Mnhmmghmm!~"

Isthar's eyes went wide once again as it was Ereshkigal truly feeling the wonders of a romantic lip-lock between herself and Shirou Emiya. Her eyes fluttered to a close as she melted into the embrace, putting her arms around his shoulders to embrace him while keeping her hips raucously slamming down onto hips in a passionate frenzy.

'Eeeeeeee...! I love these..! Emiya-Kun and i...making out..! Mnghmmhh! I can't get enough of this..! I love it so much....! And he's so good with his tongue too...!~' Ereshkigal thought as she languidly wrangled the man's tongue with her own, tasting his saliva in a deeply profound kiss while riding him with wild abandon for a little while longer. 

Shirou's hands ran down her soft body as they never let go of each other the entire time they steadily approached their climax, but he was beginning to feel his cock lurching with the need for ejaculation and brought one of his hands down to clutch one half of Ishtar's ass with his fingers. Ereshkigal secretly moaned with glee as she continued swallowing his tongue and drinking his saliva when she squeezed her tits into his chest, becoming one with Shirou at long last as the two of them bucked pelvises together in a frenzied exchange of bliss.

"Gnngghh..! Uungh...ungh..ungnh..mmnghmhh! Ishtaaarrr..! Aaaaaghhh! I'm coming..! Oohhhhh......!~" Shirou howled blissfully into her lips before she sealed them back up again with her lips. Suddenly he grabbed onto both halves of her ass and thrust his hips upward, burying every inch of his length deep into the Goddess's pussy and unloading all the sperm in his balls into the fertile depths of Ereshkigal's womb without realizing it was her. "Mngghmmhhhh!~"

Ereshkigal nearly went cross-eyed as she felt the deluge of his essence pouring into her again, this time with her cumming at the same time which involved her cervix milking his length desperately as she dug her nails into Shirou's shoulders.

Spplrrt....spplrrt..spplrrt..spplrrt....spplrrt..spplrrt...spplrrt....spplrrt...spplrrrtttttt!

Long, thick ropes of his sperm flew into her womb en masse yet again and as predicted, filled her up to the brim where some of it was left pouring out as their bodies lurched together in a series of heavy twitching. Ereshkigal let out her most girlish wail of ecstasy as she found herself milking Shirou's cock with a drunken smile of euphoria on her face.

"Eyyeeaaaaaaaahhhhhhhh!! Mmgnghhhhh! Oohhhhh....Emiya-Kun! Emiya-Kunnnnnn! I love you...! I...love..yoouuaaahhh!~" She cried out with little glowing hearts in her eyes and a strange glowing symbol of pinkish-red energy appearing directly over her womb. It was a strange symbol similar to the design of Shirou's Master Seal yet it had two wing-like projections sticking out from the edges as it glows brightly with divine energy.

Countless sperm cells fluttered toward Ereshkigal's womb just as they had done with Ishtar herself earlier today, both legions of swimmers made 'contact' with each Goddess's exposed egg and started the process of fertilization while Ereskigal became drunk on happiness and pleasure during the minute-long coitus she shared with Shirou until he was finally done. He had finally gone flaccid and collapsed underneath her body for a brief resting period with his dick spilling out of her cunt, leaking thick amounts of sperm from inside while the woman herself cuddled blissfully on top of him.

"Haah..huff...huff...huff..that was amazing, Shirou. Mnhmhhm...this is just like our first time, huh? Heheheeh, you've made me a very happy Goddess right now and I'm willing to let you rest only for a little while more until we go at it again.~" Ishtar said. Ereshkigal felt giddy enough to want to marry Shirou right off the bat and take him down to the Underworld with her for keeps despite all of causality being against her since this was a Singularity and he had to go back home once Kingu and Tiamat's forces were dealt with. 'Why do I feel....different right now after having him cum so much inside of me? It's like....something changed deep within my body and Spirit Core. Hmm, I'm sure it's nothing. I just want to enjoy this romantic moment right now and think of nothing else until later....when sister Ishtar strangles me for trapping her in my room. Hehehe...'

Shirou curled an arm around her backside and kept her close.

"Yeah..huff..huff...I am feeling ready to go again if you are, but I'm going to want some help. I think you remember what I mean, right, Ishtar? Hehe, you always did like to suck me off after an intense round like that.~" Shirou suggested and Ishtar, blushing madly as Ereshkigal felt caught in the headlights, decided to oblige him right away as she nodded her head before sliding down Shirou's body from the side.

"Hee hee, you got it, Emiya-Kun. It'll be my dessert after having the full-course meal, and boy, you are filled with energy, huh? Your body and your stamina is perfect and you can even go for a while despite having cum so many times already. You can compete with the Gods alright, Emiya-Kun, but for now, I only want you to focus on me as I do....this...aaammnhmm..Shhluuppp..slllrpp....shlurpp! Mmnhm..!~" Ishtar(Ereshkigal) said as she swallowed the tip of Shirou's dick into her mouth and lets her head dive further into his crotch with her hands planting themselves around his waist to steady her pumping motions. She was honestly new to this and rather awkward about it since she had only seen Ishtar fellate him time and again, never having tried it herself until now, but the feeling of Shirou's meat wedged between her lips as it pushed down her throat emboldened her to do her best. 

Her lips sealed tightly around the center of his shaft with her tongue rolling up around its surface as she began bobbing her head on it in a lurid fashion.

"Mmnhmm...Sllrp...shlurpp..shlurppp..sllrhupp..sllrpp..shlurppp..slrrpp..shlurpp mmnhmmh!~" She mewed softly with utmost happiness as she kept bobbing her head onto his crotch, taking him deeper and becoming entranced by the moment while noticing Shirou toss his head back in euphoria. It had to be more sensitive to him since he had just come inside of her for the umpteenth time, leading Ereshkigal to double her efforts in getting him hard so they could fuck again. 'The spell only lasts for so long and I hope my sister isn't too infuriated with me once I return, although I doubt she'd want to come down to the Underworld just to give me an earful. In either case, I can explain that I did this...out of love and hopefully, she'll understand that I want to be a part of Emiya-Kun's life even when this mission of his ends. She probably feels the same way. Mmnhm...! Oohhh..he's nice and hard again!~'

"Hngghh...! That'll do it....ooohhh, Ishtar. Mmmnhm... right, let's shoot for rounds three, four, and beyond until everyone gets back. Hopefully, they're not gone the whole day or else I'll be worried, but at the same time, I don't want anyone spoiling the mood. You're very cute today despite being pretty demanding earlier like back in the alleyway.~' Shirou said as his dick popped out of her lips with a slick pop and a string of saliva connecting the tip to her chin before she smiled at Shirou and stood up on her kneecaps. 

Ishtar ran her hands down her body provocatively with a sultry smile, feeling far more like a confident woman than ever before as she beckoned Shirou to come to her with a crook of her finger.

"Well, you could say that I'm just...going through the motions lately, Emiya-Kun. Let's do this. Come treat your Goddess properly. Hee hee.~" She gushed with glee and just as before, Shirou came lunging at the body of the divine woman, ready to make the bed creak with noises rife with lovemaking for the rest of the night. 'Eeeeee..! This is the best night of my immortal life ever..! Oohhhh, Shirou-Kun...!~'

"Here I come, Ishtar. Though I gotta say I'm liking this sugary, sweet side of you a lot right now. It kinda reminds me of your adorable sister Ereshkigal.~" Shirou said, causing Ishtar(Ereshkigal)'s heart to thump loudly with a bright blush appearing across her face till she was met with Shirou's lips after being pulled onto his lap for the intent of having sex in a seated-styled position. 

'Heh, I always knew he thought of me that way. I'm reeeeally going to have to be convincing with Ishtar and plead for her generosity in letting me in on this later on.~' She thought before engaging him and doing so happily amid the repeat of the sounds of lovemaking happening right here in this room.

And they continued on until some point later into the night when they were done, Shirou was spent, and the spell swapped both Goddess sisters back to their original places.

.....

"Ah, finally...! I'm here again. That little..grrrghh..! She'd better have a good explanation as to why she went this far and it can't just be because she's in love with Shirou too. Hmph." The real Ishtar said as she grumbled with slight annoyance for having missed out on a marathon of sex with Shirou when reappearing inside of her original body atop the bed. Shirou was out like a light, sleeping soundly and naked underneath the covers as she got up and ran her hands through her hair with an embarrassed look on her face. She had never once considered Ereshkigal to be so conniving and cutthroat about getting what she wanted but never got, yet now she saw her sibling in a new light as she saw the obvious signs they were at it like primal beasts during mating season. 'Man, she did a number on him and I'm sure she's just as drained right now as he was, but I--w-what...is this? It's that same mark from before....!'

Ishtar thought to herself in surprise and mild concern as she looked into a dressing mirror in front of her to see that glowing tattoo-like mark similar to a Master's Seal appearing on the surface of her womb in a glowing light. She touched her cheek with her hand, wondering what this was and ultimately shrugging it off as she decided to get something to eat downstairs.

"Maybe it's nothing and perhaps just a kind of Divine Mana-Transfer Ritual of sorts being unwittingly activated. It is a thing although I've never seen this symbol before. I wonder what it all means." She surmised as she cradled her flat belly, unaware that there was a newly growing female lifeform inside of her womb wrought of the lovemaking she had with Shirou earlier on. The fetus brimmed with Divine power and grew at an accelerated rate within yet Ishtar had no idea of what it was and neither did a certain Goddess of the Underworld.

....

******

"Whaaaaahhhh...?! What's this symbol now..!? And why didn't I see it before?! This couldn't be a side effect of my spell, could it?" Ereshkigal, now back in her clothes and with her hair blonde again, clapped her cheeks with her hands when she noticed the strange 'Womb Tattoo' appearing on her belly through her dark clothing. It was glowing with divine power and appeared as a type of Master Seal but with variations added to it as though it was some kind of 'sign' of sorts. 'T-this has never happened before! Not even when I swapped out with Ishtar the first time I got to know Emiya-Kun! I wonder what could it mean...' 

She looked at the mark again and again, analyzing her body from every angle in the mirror till she gave up and threw herself back onto the bed with a wistful sigh leaving her lips.

"Ah, no matter, I'll..figure out what it is eventually anyway. I've got nothing but time down here and well..now I've got a new hobby. Hee hee, getting romantic with Emiya-Kun has been the best moment of my long life and I can't wait to do it again. Right after I.....heh...talk with Ishtar before I attempt another try that is. I'm sure she's very angry at me right now, but it's not fair to have him all to herself. Hmph.~" Ereshkigal said, convincing herself of her actions being just as she basked in the afterglow of having sex with Shirou throughout that night until her spell wore off. 

While she was gleefully kicking her feet about over the edge of her bed, a glowing female lifeform inside of her womb began to form in the same way Ishtar's was. Together, both Goddesses had Shirou Emiya's daughters growing inside of them after copulating with him successfully today and did not realize it at all.

'Oooohhh...I cannot wait, but I do hope that Luchadora witch Quetzalcoatl doesn't suddenly get the urge to hog him away from me as well. Either her or that Demi-Servant Mash Kyrielight. Ah, I can't wait till next time when we meet again.~' She gushed and rolled onto her side to sleep soundly in her own bed with vivid memories of Shirou's naked body pressing against hers non-stop for hours on end.

End of Chapter

To Be continued...?

This has been for M and R, thanks for reading..!

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