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Pixivリクエスト12 (Pixiv Fanbox)

Published:
2024-11-16 15:32:58
Edited:
2024-12-07 12:43:45
Imported:
2026-06
Tags:

Content


https://www.pixiv.net/requests/265614


Pixiv리퀘스트 12/Pixivリクエスト12/Pixiv Request 12










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Comments

SpicyFish

These days, Mas and Hans must be feeling quite lonely. (^ω^)

John Binger

Let's goooooo! Fire month for our little Seima!

fujitora

세이마 넌 확실히 강해졌다. 마스와 대등하거나 그 이상이야

Star36

Thank you for the Pictures

Randgriz

Love seeing Seima winning, keep up the great work, hope to see more of Seima

CJ

[First Sibling Sex] Sei: "Secil-nee, let's just go, please.." Sec: "Hm? But we just got here?" Secilia and Seima were at the village spa. Sei was embarrassed seeing all the big uncle penises, and was pulling at his sister's arm to leave. Uncle: "Ho ho, Secilia, leaving so soon? Can't I help clean you before you leave?" His penis throbs as he lightly massages her breast. Sec: "Sorry uncle.. but something came up." She doesn't mind being touched by men at all. Sei: "Let's go..!" Later that night: Sei didn't come out for dinner, so Sec went inside his room to check on him. Sec: "? Sei?" He was asleep at his desk. On his computer screen was a video - "How to add length to your penis quickly" Sec: "!!" She didn't realize Sei was insecure about his penis length. After tucking Sei into bed, she took his computer to her room to do more research. The next morning: Sei: "Hm? Aren't we going to train?" He's confused why Sec pulled him into her room Sec: "We are! Just a different training"

CJ
>>8704702

Sei: "!! Sister?!" He was surprised as she stripped down to her underwear. Her breasts jiggled as she took her bra off. Sec: "Starting today, we'll do some training to grow your penis." Sei: "!? You saw my computer?" He felt flustered and embarrassed. Sec: "Sei.. let me help you.." She took his hands and placed it on her bare breast. Sei: ".." His erection grew and grew under his pants as she massaged his hand into her breast. As Sei continued to massage her breasts with both hands, Sec slipped on his pants. Sec: (It's 5 cm..) She used a measuring tape to measure his erection. As comparison, many of the uncles' penises are 20-30 cm. Sec explained to Sei that it's a normal size for a boy his age, so he shouldn't be embarrassed. However, if he wants to grow his penis, one way is to be sexually aroused for prolonged periods of time without ejaculation. This will deliver a lot of hormones to the penis to promote growth.

CJ
>>8704704

Sei: "I guess that makes sense.." Her nipples are getting more plump and erect from his massage. Sec: "Here, Sei." She brought a nipple close to his mouth, and he instinctively started kissing and sucking on it. Precum dribbled out of his erection, making a small wet spot on Sec's sheets. Sec: "This is good for arousal, too." A line of saliva connected her nipple to his mouth as Sec moved closer to kiss him on the lips. It started out as light pecks on the lips, but gradually as they got more comfortable, they began to share saliva and connect their tongues. For the next 4 hours, Sei alternated between sucking her nipples and french kissing her lips. At the end of the training session, Sei's penis was now 6 cm, and there was a puddle of precum on her sheets. Sei: ".. sorry sister!" His mouth was numb from all the kissing and sucking. Sec: "Sorry for what? You did great!" She was excited his penis grew a bit with her.

CJ
>>8704705

For the first 4 days, this was all they did (breast play and kissing). And after 4 days, his penis grew from 6 cm to 6.5 cm. Sei: "It hurts, sister!" All this arousal without ejaculation made his testicles swollen and painful from all the semen. Sec was afraid to do things like blowjobs and titfucks, because he would cum easily and lose out on the prolonged arousal required for penis growth. Sec: "Here, Sei, we can do this." She felt that he completed all the growth he could from breast play. And wanted to reward him for his hard work. Sei remained seated on the bed as Sec stood up. Sei kissed her belly button while rubbing on her wide hips and soft butt, as his sister instructed. Sec: "That's good. You can kiss here too." He kissed the sticky, sweet part of her panties. All the pheromones from her pussy and pussyjuice strengthened his hormone release, and his penis grew from 6.5 cm to 7 cm in a single session.

CJ
>>8704706

The next day, Sec instructed him to peel her panties off for the first time. He's seen her pussy many times, but never this close. A thick line of sticky pussyjuice connected her panties to her fat pussy. Sec: "You can kiss it directly, now." The smell and taste was far stronger without the panties covering it. He kissed and licked her pussy for hours, causing a lot of pussyjuice to dribble out. Over the next 3 days, he continued to eat her pussy in many different positions (Secilia standing, doggystyle, missionary position). On the 7th day of this training, Seima was kissing Secilia's pussy while she lay in the missionary position. With many hours of experience, he grew skillful, and was pleasuring Secilia to the point of orgasm. He alternated between tracing her clitoris with his tongue, and sucking and blowing directly on her clitoral head (this was all things he learned by instinct). Sec: "Come, Sei, let's take a break with kissing." Her organs were doing backflips from pleasure.

CJ
>>8704708

But Sei was upset at Sec for causing his genitals to hurt so much, so he kept sucking and kissing on her clit. Her hips gyrated against his face, with one leg wrapped around his neck. Sec: "Mm! Mmm!!" She began to orgasm, squirting fluid from her Skene's gland into Sei's mouth. She orgasmed for a minute, and Sei continued to pleasure her throughout. At the end of this productive session, Sei's penis is now 7.5 cm. The sheets were soaked with Sei's precum and Sec's pussyjuice and orgasm fluid. For the 2nd week, they continued to train for hours every day. Sei often made Sec orgasm. One time, Seria went into the bath and saw her children hugging and laughing. She was glad to see them close again, but didn't expect the naughty things they did after she closed the door. To relieve Sei's pain, Secilia would kiss and suck on his swollen balls or even lick his anus. But she wasn't allowed to kiss his penis directly, even if Seima begged for it.

CJ
>>8704709

She'd lick off his precum from his testicles, and noted it tasted both sweet and salty. At school, Seima would look at naked pictures of Secilia that she took of herself, to make sure he stayed aroused. Seima is normally good at hiding these photos from his schoolmates, but at the start of the 3rd week.. Aron: "Seima what are you looking at?" It was break, and Aron found Seima hiding behind a tree. Seima got flustered and quickly hid his pictures in a book. But Aron grabbed a corner of a picture and pulled it out. Secilia's face was hidden in the picture, but it was a picture of her laying on her bed in missionary style with her legs spread. A marker wrote out the phrase - "eat my pussy more, Seima" - on her thighs. A: "Whoa!! Seima, is this your girlfriend..?" S: "Y.yeah.." He's shy that his best friend found a picture of her naked sister. A: "Lucky you..! Wait, is this a hymen?" S: "Hymen?" Aron hasn't had sex yet, but he knows about it. So he explained a lot of it.

CJ
>>8704710

Sec is concerned because Sei often tosses and turns and moans in his sleep from sexual pain, but tonight was even worse than usual. Sec entered his room: "Are you ok, Sei? Do you need me to kiss your testicles?" She's used to doing this to calm him down. As Sec kissed his balls and licked his anus, she noticed how enlarged and purple and deformed his testicles are from 2.5 weeks of arousal and teasing. She wondered if she should relieve his pain now. The siblings spoke at the same time. Sec: "Shall I kiss your penis now?" Sei: "When are we going to have sex?" Sec: "!!" Sei: "!!" Sei explained how Aron taught him about sex a few days ago, which made him desire Secilia even more and want sex. Sec: "It's true that vaginal squeezing can lengthen the penis as well.. but without prolonged arousal it might not work.." Sei: "Then we'll just do it once!" Sec: ".." Her pussy quivered a bit at how much Sei wanted her. Sec measured his penis, and it's 7.7 cm now.

CJ
>>8704712

Sec wanted Sei to prove his commitment to training, that he'd only have sex once. "We can do it once when your penis reaches 8 cm." Sei: "Ok.. let's train now!" It's the middle of the night, and Sei has school tomorrow. Sec: "!!" Sei's voice was very sure, so Sec didn't stop him. For tonight's training, the siblings got in various sexual positions to simulate sex. Sec: "This is cowgirl.." She squatted on top of Sei, her pussy juice dripping down on his penis. Sec: "This is doggystyle.." Her pussy was so close to his erection that he could feel the heat waves. If he moved an cm forward, he'd enter her. Sec: "This is missionary.." Her feet were against his chest to make sure he couldn't lean forward and start sex. Not being able to rub his penis on her pussy, he instead rubbed her pussy lightly with his hand. It's been hours of simulating sex, and they took a break with Sei eating her pussy. He admired her pretty clit and pretty hymen as he casually and lovingly kissed her.

CJ
>>8704713

Sei: "Is it okay?" Sec: "Hm?" Sei: "If we have sex, you might lose your hymen, right?" Sec: "Well.. it's fine. I wasn't planning on having sex any time soon. We'll be each others' first." His penis quivered and grew a bit at Sec saying this. The sun has been up for a while. Ser: "Breakfast is ready, Sei!" The siblings lost track of time. She measured his penis - 7.95 cm. Sec: "That's close enough Sei." She was waiting to have sex all night. Sei endured this training, so deserves it. She scooted her butt towards him and grabbed his hand. Sei: "No!" He wants to prove to Sec that he's strong enough to wait for sex. Sec: "Ok.. well let's do this then.." At school, Sei's hands were shaking as he looked at the new pictures Sec took right before he left for school - it was many pictures of his penis near her pussy, as if they were about to start sex. After school, Sei ran into Sec's room. They got naked and kissed. His penis is 7.98 cm. But Sei was so tired from lack of sleep

CJ
>>8704715

Sec: "Hey pervert.." It was night now. Sec showed Sei the measuring tape, showing his penis was now 8.01 cm. He had many hours of dirty dreams of sex with Sec, which caused his penis to grow during his sleep. He's lucky he didn't ejaculate during these dirty dreams. Sei got on top of Sec, spreading her legs. Her pussy was a mess of creamy white froth as she thought about sex all day. As Sei wiped away the froth from her pussy so he visualize her hole better, Sec grabbed the camera to record their first memory. Sec: "You picked missionary after all? Hentai♡" Sei: "It's okay to record video?" She passed him the camera. Sec: "Well, it's our first sex, so we should save this special memory." She waved a peace sign at the camera as Sei planted his penis tip on her pussy. His penis felt heavy and numb, and as he pressed forward, it slipped and rubbed against her clit. A jolt of pleasure shot up both of their spines as their genitals touched for the first time.

CJ
>>8704716

Sec gently grabbed the base of his penis with her hand. "Hey.. you'll ejaculate before we even do it." She raised her butt so his tip aligned with her opening, and then Seima leaned forward. Her pussy quickly swallowed his erection whole. Sei: "Ugh.." Loving warmth tightly wrapped all around him. As he pulled back, her pussy gripped on him tightly, begging him not to leave. Eventually he lost his strength and slipped all the way back inside again. He wanted to last a while to pleasure Secilia, but after only 2 in and outs, his hips began spasming and he fell on her breasts ejaculating for the first time in his life. Even though his penis tip didn't touch her cervix, Sec felt hot pangs of semen hit her cervix one by one, every few seconds. The loads of semen gradually got smaller and slowed down after a minute. Throughout this minute, Sec continued to gyrate her hips and squeeze her vagina to pleasure her brother. Her womb was filled with his virgin cum.

CJ
>>8704718

Sei carefully recorded as he pulled his penis out. Sec wrote the phrase "Congrats to Sei's first" on her thighs to commemorate their first sex. They took several photos with their faces and peace signs, as Sei's semen started to dribble out. Sec: "You can show Aron the ones without my face, ok?" She didn't want Sei's friends to think he was lying about a girlfriend. They said they were only having one sex, but Sec noticed his testicles were still painful and purple, and he still had an erection. She measured it, and it's now 8.03 cm. Maybe vaginal stretching does work well. So they decided to keep having sex a few more times - doggystyle, cowgirl. And each time, his penis got slightly larger (8.035 cm, 8.04 cm). So they kept having sex, and recording video each time. It's now sunrise, and they were taking a bath to clean their sweat and sexual fluids. Sei kissed her pussy, noting that her hymen is now gone after sex. Sec licked his penis clean, performing her first blowjob.

CJ
>>8704719

It was breakfast time, and Seria couldn't find Sei in his room. He heard noises coming from the bath, and found Sei moving his hips behind Secilia. Ser: "Ara? What are you two doing?" Sec: "Sei isn't feeling well, so we wanted to take a bath before school." Sei: "I'll come for breakfast soon!" Ser: (Hmm? But he certainly looks energetic.) She imagines Seima and Secilia to be innocent so she couldn't even think of the possibility of them having sex. Sei looked at the pictures of their sex at school, and once he came back he convinced his sister to have sex a more times. After orgasm'ing close to 20 times that day, now his testicles are once again shriveled and relieved, and his penis small, unable to get an erection. His erection during last sex was now 8.2 cm. They agreed to only have sex each time Sei hit a new cm, and once he hits that new cm, he can have sex as many times as he can maintain an erection.

CJ
>>8704720

It's been a month since they first had sex. They have sex about once a week, and now Sei's penis is 11.95 cm. Sec is chaperoning a field trip with Sei's classmates to a famous spa. His friends touch her breasts and butt, and Sei is annoyed that she doesn't mind. Sec is licking his anus and testicles in her room. His penis is now 11.98 cm from jealousy, and he's hoping to reach 12 cm for sex. There's a thump outside the door, and when Sec opens it she finds Aron and Bluden. Who enjoyed seeing her naked body and wanted more. In fact, Aron has already deduced that Sei's girlfriend is in fact Secilia (there were some pictures with her face in it). A: "Um.. Secilia-nee.. I hear that you know how to grow penises.. so we were hoping.." Secilia remembers Aron as the boy who touched her the most in the bath. And Bluden is the boy who has confessed many times to her. Secilia thought that she can use Aron and Bluden to make Sei more jealous, so he can grow.

CJ
>>8704721

Sec: "Did Sei tell you that?" She said this as she took off their clothes. Sei: "no! I didn't!" Bluden measures 4 cm while Aron measured 16 cm, which surprised Secilia. He's larger than Seima even without training. Bluden ejaculated fast after some kisses and sucking, but Aron lasted a while. He held her hair as she sucked on him. A: "Ah! Cumming!" She swallowed it all. Aron tasted stronger and more manly than Bluden or Seima. As she kept sucking on Aron, she felt Seima enter her doggystyle. He must've reached 12 cm while watching her blowjob. Sei: "Mouth is good, but vagina is tighter so it helps grow even more." Bluden and Aron watched amazed as Seima and Secilia had sex. Sec continued her blowjobs so they wouldn't feel lonely. After doggystyle, the siblings had missionary sex while Bluden and Aron were on each side of Sec, rubbing on her lips and nipples. A: "Is it okay if I have sex next?" Sei: "No!" His thrusts got faster. Sec felt happy with Sei being possessive of her.

CJ
>>8704722

Another month later, Sei is now 16 cm, matching Aron. Sei: "Your belly is getting bigger.. is this from semen storage?" Sec: ".." She wasn't sure. Actually, Sei got her pregnant from their first time having sex, two months ago. A week later, the doctor confirmed with Secilia that she is pregnant. Sec and Sei both agreed to keep the baby, keeping it a secret from Seria. They were secretly happy to be having a baby together. Seria first noticed Secilia's belly another month later, and Secilia explained that it must've been another adventurer. Ser had no idea Sec was even having sex yet. They went to the village spa at 6 months pregnant, and all the village uncles were amazed at her pregnant belly and enlarged breasts. Uncle: "Whoa!! Who's the lucky father?" Sec rubbed Sei's 20+ cm erection. "I'm not sure.." Sei didn't even mind too much as Sec pleasured a few uncles with her mouth and breasts, because he knew Sec belonged to him. In fact, the jealousy only made his penis grow larger.

CJ
>>8704723

Uncle1: "pregnant Secilia boobs are the best!" Uncle2: "Can we have sex?" Sec: "No.. my brother is here" Back at home, Sei begged to have sex, kissing her pussy. Sec: "You're not yet 23 cm yet.. we can't.." This teasing made his penis grow too. Only Bluden and Aron knew that the father was Sei, so to keep them quiet, Sei would invite them over for sex. Bluden was allowed to have raw sex with Sec because he's small, but Aron was forced to wear a condom during sex. Aron would complain a lot. "Why do I have to wear one when Bluden doesn't?" Sometimes they would come for sex while Sei was in between cm, so all he could do is watch without sex. At 10 months pregnancy, Sec's belly and breasts were massive. Her nipples would leak milk, which Sei would eagerly drink. Sec: "Congrats Sei for 26 cm.. it's time for sex." It's been nearly a month since his last sex (growth slows down the bigger he gets). Sei: "But didn't the doctor say that sex is dangerous right now?" Sex might induce labor.

CJ
>>8704726

But Sec assured Sei it would be fine, so they had sex. His erection stretches her already dilated cervix and fornix. She feels the baby kicking from all the activity. Even though he didn't want to startle the baby, he couldn't help but have rough sex. For the past month, he had to watch her pleasure many spa uncles (some of whom ejaculated on her pussy), as well as Bluden and Aron have sex with her multiple times. After half an hour of rough loving sex.. Sec: "Cumming..!" She began squirting on his torso. Sei: "Cumming..!" He began ejaculating into her womb. But a lot more watery fluid came out of her pussy than expected. Sec: "I think.?" As Sei pulled his erection out, Sec delivered their baby quickly and painlessly. Their sex caused her amniotic sac to pop. Sec quickly wiped their baby boy clean as Sei ran to grab clean towels. It was a healthy baby boy who looked just like Seima. They named him Seiji.

CJ
>>8704728

After the baby was born, the siblings didn't slow down their training at all. Sec has a miraculous body, so that the day after delivering a baby, her body shrunk back to before she was pregnant, and her pussy got tighter than she was as a virgin. Even knowing the risk of pregnancy, they continued to have raw sex. Every year, Secilia would deliver another healthy baby. Eventually, Seria found out that it was Seima who is the father of the babies. At first she was surprised, but she wasn't upset at her children at all. She's glad they are able to love each other like this. As Sec and Sei got older and were more comfortable with their sexual relationship, they gradually allowed more men to be involved with Secilia. While she was 3 months pregnant with their 2nd child, they went to the spa. Sec gave Sei a blowjob as the village uncles took turns having sex with her. Uncle: "Sei, are you sure you don't want a turn?" Sec: "He's not 30 cm yet♡"

CJ
>>8704730

And after delivering their 3rd baby, the siblings invited Bluden and Aron over for a game of "russian roulette". It's been nearly 3 years since they first had sex, and Seima is now 36 cm while Aron is 25 cm and Bluden is 8 cm. They each took turns having raw sex with Secilia. They recorded with a camera as there was marker on her thighs that wrote - "baby 4's conception". After a few rounds, it was just Seima and Aron taking turns, neither wanting to give up. 9 months later, Secilia delivered 2 babies - one with brown hair and one with blue hair. Signaling that it was Aron and Bluden's babies. Secilia named them Arlo and Blayne after their fathers. Even though Sei was jealous, he raised these boys as his own. Even after reaching 40 cm, the siblings continued this training, and Secilia was almost always pregnant. Seima went on to become a powerful adventurer as Secilia stayed home to care for all of their babies.