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“How’s your civics review going?” Sanemi asks, placing a hand on her shoulder; peering over to look at her notes. Genya is at the part of her review where she’s just studying flashcards. Strewn across her desk are textbooks covered in highlighter and tabs, tonight’s math homework—completed first at Sanemi’s insistence— and a notebook filled with thin lines of civics review.
She looks up, nose to nose with her brother. She flushes and averts her eyes, “It’s okay, I feel like I’m prepared enough for my quiz tomorrow.” She fiddles with the stack of cardstock in her hand running the edges along the pad of her finger.
He raises a brow, “You don’t sound confident.”
“I guess I’m just worried about forgetting everything, it’s all rote memorization, so if I forget tomorrow morning I’m doomed.”
Sanemi huffs, unamused by her anxieties. “You’ll be fine, you have a good grade in Gyomei’s class so you’re obviously not a complete dumbass.” He places a hand on her head, “It’s bedtime anyway, you don’t need to be worrying about this.”
“Himejima-sensei said this quiz was going to be harder than the last ones though…” Genya says dejectly as she shuts her textbook and puts away the rest of her studying materials. Sanemi makes sure to remind her, always, to keep a tidy desk. Nagging her constantly about cleanliness and organization.
Sanemi gruffly responds. “And that’s why I made you study civics extra this week. Now hurry up. I had a long day and I wanna go to bed.” He begins to walk away from her desk and starts getting into their shared bed, clearly impatient and tired from a long day of haranguing his students all day.
Immediately, Genya feels guilty for eating into his time with her anxiety. She’s felt that a lot since moving in with Sanemi, guilty about taking up space in his apartment, for worrying him, for doing anything pretty much. It eats her. And ‘nemi knows this, and tries his hardest, but seemingly everything sends her spiraling. She’s never blamed him though, it's all her.
“Sorry,” she rushes to put her notebook away in her bag, before quickly shuffling over to their bed. “Turn the lights off” Sanemi grunts, she turns around and flips the light switch, now the only light in the room is coming from the lamp on their side table.
“Now come lay down.” He lifts his arm up and she burrows into his side, now comfortably swaddled by their comforter and squeezed close by her ‘nemi’s hefty arm. He lets out a long sigh, “I know I put a lot of pressure on you,” he starts, hushed and intimate. “But I know what’s best for you. Okay?” He squeezes her in emphasis, “you’re doing really good right now, and if you keep this up everything is gonna work out for you. You’re gonna get into a great university and get a great job, and we can get out of this shithole apartment.” He kisses her forehead, “But that can only happen if you keep going the way you're going.”
She sniffles, “I will ‘nemi.” She feels him smile and reach across her to click the lamp off
“Himejima told you guys that the quiz was going to be harder because he wants the rest of your classmates to start getting serious about their grades and
try for once.” He grumbles, settling back down. An imaginary weight slides off Genya's back as she slips into a dreamless sleep. Her aniki is so kind.
—
She comes to consciousness the next morning in bits and pieces. She can feel the weight of her body on their bed and the way the sheets rub against her bare legs. She feels her hair pressed into her face, tickling her eyelids and the tip of her nose.
But what really shocks her into reality isn’t an alarm clock or the sun warming her face. It’s her brother’s cold, calloused hand smoothing up and down her thigh. And with his tired, gravely morning-voice “Genya wake up… come on princess up up you gotta give me a kiss before I go.” Shaking her slightly to wake her up.
She sniffles and huffs and dragging body upright, Sanemi smiles that soft smile that's only for her. Another secret held between the siblings.
“There’s my sweet girl.” He pats the inside of her thigh.
“I'm on my way out, okay? I’ll see you in class, be good, don’t be a dumbass, OK?.”
He presses his lips to hers, he climbs onto their bed pressing her back into the bedsheets. The kiss is more heated than their usual morning pecks. His hand travels down till it reaches her panties, he brushes against her, slowly and intentionally. Working her up slowly, dragging his heavy hand over her clit. It gives her full-body shiver, making her squirm and curl her toes. Her body is so much more sensitive in the early morning, her mind soft and easy to please.
He squeezes her shoulders and presses her down before breaking the kiss and tucking her back in. She’s wet and grumpy and tries to get back up before her brother shoves her back into bed and tucks the comforter even tighter around her.
“Go back to sleep dipshit, you need your sleep, and I don’t have time to fuck you.”
She rubs her thighs together and pouts but ultimately, she’s way too tired to fight her brother about how it’s his fault she’s even riled up in the first place. She rolls over and he rubs her back for a bit before actually leaving.
In an hour, the beeping of her alarm clock wakes her up. Again, she huffs, grumbles; shuffling out of her blanket cocoon. Her alarm stops wailing after a few seconds and she starts getting ready for the day.
She’s half awake through most of her morning routine. The cold tiled floor of the bathroom is entirely unpleasant to her morning sense, she shivers and she stares down at herself. She sees a wet patch on her panties; realizing she has an additional step added to her schedule she sighs.
She’s confused as she wipes herself down, as to why Sanemi got her so worked up for him to just leave her unfinished. He’s usually so attentive, making sure she’s taken care of. Ensuring she’s comfortable and pleasured. But it's not unusual for him to tease her a little, to dangle the treat of orgasm over her head, trying to get her to beg sweetly or to promise to finish all of her homework over the weekend. But all day…
‘If he keeps this up all day…’ ‘I’m gonna kill him’ . Swallowing her birth control and the supplements Sanemi has her taking, she vows that she won’t give into any of his teasing for the rest of the day.
By five she’s washed her face, gotten dressed, and is eating breakfast. Breakfast is usually easy, ‘nemi will make her a portion when he wakes up and places it in the microwave, so when she’s finally up she can just turn the machine on and she’ll have breakfast in a minute thirty. Bento’s are also made courtesy of her big brother. Always doting. It makes her feel all fluttery and taken care of when she thinks about it, not just breakfast but everything he does to look after her.
He’s always been poor with words—too embarrassed to be so blatant about how much he cares for her and the people around him—so his cherishing and fussing is the best way he can show Genya just how much he loves her.
———
She’s out of the house by six and is able to catch Koyuki passing her house.
“Genya ! Good morning !” Koyuki is an enthusiastic morning person.
“Good morning !” Genya meekly returns the greeting, quiet but no less friendly. “Where is Hakuji? I’m guessing he’s still sick?”
Koyuki sadly nods, “Yeah, he’s doing better, but still not well enough to go to school. He almost tried to leave with me this morning but I told him that he needs to stay home.” Genya expresses her sympathy and wishes for him to get better. She misses the third member of their morning trio. Hakuji usually accompanies his fiancé and her friend to school. He makes Genya not feel like an obtrusive third wheel, always making sure to include her and giving her time for just her and Koyuki to talk. He’s very attentive and Genya thinks they’re both very lucky to have found each other. Hakuji also makes the morning commute feel a little safer, both of the girls can defend themselves but it feels nice to have a deterrent.
“Are you ready for the civics quiz today?” Genya asks, once she’s closer to Koyuki.
A sullen look crosses over her face, “No… I’m hopeless Genya, I think the only subject I’m good at is arts and crafts.”
”Hakuji wasn’t able to help ?”
Somehow an even more sullen look overtakes the Hydrangea Class first year. “No, he was no help, he said he couldn’t remember anything from his first year civics class. All he could help with was copying down my notes to make flash cards.”
Genya thinks to herself, ‘I can’t believe most of my friends are academically hopeless’. Immediately that thought is banished. “Well… at least you reviewed. That’s better than some people I know.” Internally, again, Genya thinks, ‘Zenitsu! That slacker.’
Koyuki grabs onto Genya’s arm, “Genya, how do you keep good grades? Please, please, tell me your secret.”
Genya sheepishly looks the other way, "Unfortunately I think my good grades are in part because of my overbearing older brother.”
“I’d take anything, even the demon that is Shinazugawa-sensei!”
“Hey!”
“I’m sorry.” Koyuki does actually look apologetic for offending Genya, “but honestly, Hakuji is too soft to keep me to a studying schedule and my parents are way too dedicated to the dojo.”
She huffs, “I mean like seriously over dedicated. Like, one time I said I wanted help with my calculus homework, and my dad said ‘When will you need Taylor series to teach self-defense?’ He said that seriously, no jokes.”
Genya is honestly a little jealous, Sanemi has beaten it into her head, repeatedly, the importance of the current sequences and series module they’re going over in class right now. Genya could probably recite the lecture in her sleep.
But on the other hand, Koyuki clearly wants to get better studying habits. “I get tutoring from Muichiro-“
“The Middle School’s proud prodigy?” [1]
“Yeah, Tanjiro and the rest of them introduced me to him. I got a hundred on the next exam I took. So, he’s legit.”
Genya thinks, “If you don’t want to do that, I could send you my study schedule. It’s kinda intense but aniki made it for me so that’s expected.”
Koyuki looks at her like she hung the moon and the stars. “Oh Genya, you’re the best!” She started jumping up and down while still holding onto her arm. “I’m not going to fail! I’m not going to fail!”
She chanted this all the way to Kumotori train station.
She quieted down once they got on their train, Koyuki and Genya held onto the handgrips near the end of the train car, away from the earlier morning commuters.
Genya whispered “I think you’ll do fine, honestly, I think Himejima-sensei is bluffing.” Thinking back to last night.
“You really think so?”
“Yeah , he’s a nice guy and I think he just wanted to scare a few students into upping their studying. Especially now that we’re high schoolers.”
Koyuki nodded “Yeah, entrance exams are scary. Taking the entrance exam for this high school was scary enough, now we have to grind for three more years for another exam.”
Genya nodded in solemn agreement, entrance exams were the devil.
“Have you enrolled in a cram school yet?”
“No, not yet, aniki is still deciding between two schools. He knows one of the guys at a cram school close by, but there’s one downtown that we can afford and has slightly better admission rates.”
Koyuki groans “I’ve never been to one, I know even some elementary kids get enrolled. I feel so behind.”
“If it makes you feel better, I wasn’t enrolled in one as a kid either. We were way too poor.”
Koyuki hums ,”Me too.” The conversation peters off from there, both girls look out the windows and watch the city roll by until their stop arrives. It feels weird to Genya that she lives near so many buildings. Before she moved in with Sanemi she lived way out in the country with the rest of her family. Sanemi had moved when she was in middle school to finish his education.
Genya felt like she was going to stay there for the rest of her life. Out in the country, the little sliver of happiness she cultivated with her mother and her siblings. But after she took a high school entrance exam she was told she had to move.
She didn’t have to, have to, but she scored way above the median—and even upper percentile— for most of the high schools around her. Her mother felt like it would be a waste for her to go to a below average school where she wasn’t being pushed to her fullest potential. She deserved the best, and she could get the best with that score. Genya argued she should stay close to help out with childcare. Secretly, she was afraid of being away from the rest of her family, and her mother could tell.
Because of that, her mom roped Sanemi into it. During his regular visit over summer break he sat Genya down and told her that she would be moving in with him in his apartment in Tokyo. There, she would attend the school he taught at, Kimetsu Academy. He made sure to let her know that she had no choice in the matter, that the adults in her life had final say. Shizu scolded Sanemi for his phrasing but she told Geny that she felt like this was for the best, and that her brother and mother were always going to make the best decisions for Genya’s future.
Genya, obviously, threw a tantrum over the news. Of course her mother had to bring in Sanemi. He was such a hard-headed asshole. So she decided —in all her middle schooler wisdom— that she was going to run away into the forest and not come out until her mother and brother agreed to let her stay home.
This was a plan that was quickly thwarted.
Genya got about halfway into the woods when she heard rustling. Then she watched in horror as her enraged brother emerged from the brush. He was, as expected, not happy with his little sister's escape plan. He flung her over his shoulders and hiked back through the woods with her kicking and screaming. It was quite a sight for the mostly quiet, poor town to watch the muscled, white haired man emerge from the woods with a wailing middle school girl.
It was such an embarrassing memory, Genya’s face was flush just thinking about it. Thankfully Koyuki hadn’t turned around.
Genya remembers how exhausted she was when they finally returned home. She was inconsolable. She didn’t want to leave her mom behind, or her siblings. Not even thinking about how Sanemi must feel watching his sweet little sister bawl her eyes out at the thought of living with him.
Watching her first daughter cry so hard she started to gag, and her eldest boy slowly be crushed by the sight, Shizu had to intervene.
Rubbing Genya’s back as she hunched over her futon, “Sweetheart, don’t you miss your aniki? You’re always so excited when he visits or calls, even more than your little siblings.” Sanemi perks up a bit at the new information.
Genya warbles out a little ‘yeah’ between her sobs and heaves.
“Then why are you so sad to go live with him?”
”I-I-I’m leaving youuuu” She wails, “you-u-u’ll be all a-ah-lon’ “
Shizu tries to hold in a chortle, “I have all your siblings to keep me company, and all our neighbors too.” She continues to stroke her back, “That can’t be the only reason you're so sad? Hm?”
Sanemi shuffles closer to Genya’ trembling form, she looks like a butoh dancer, hunched and quaking. He places a heavy hand on the small of her back, and looks at her with a tenderness that’s only reserved for when her back is turned.
“I-I’m too h-happy.” Shizu almost laughs, children are so ridiculous.
“You’re too happy?”
“Mhmh.”
“And why is that bad?”
“I sh-sh-shouldn’t be-be so ‘appy to leave youuuu.” She cries.
“So you’re too excited to live with Sanemi,”
“mhm!” Her voice pitching up.
“So you're crying?”Shizu is trying her damndest to not laugh.
“Yeahhhh.” Genya’s breath hitches.
Sanemi rolls his eyes and slips his arms underneath her and lifts her into his lap, cradling the back of her head; pressing her to his chest. “You’re gonna be able to visit. And… it’s gonna be just us, like it used to be.” He whispered, “Don’t you miss that.”
“Yeahh!” Genya's wails reach a crescendo, “I missed youuu!” After that, Geny seems to calm down enough to eat dinner.
Genya is embarrassed, so embarrassed by the behavior of her middle school self. But, it seems like her mother and aniki seem to look back on that memory with deep fondness. Their sweet little girl, such a tender-hearted cry baby.
Thankfully they’ve reached their stop and Genya is no longer able to ruminate on her most humiliating memories.
The pair of first years weave their way through the throng of morning commuters and make their way out of the station. Soon, they're back to quiet and mostly empty streets.
”Mhm” Genya nods along to Koyuki’s recount of the recent beef with a rival dojo when she spots Kanae-sensei. “Ah, look, it’s Kanae-sensei, should we say hi?”
They wave down their biology teacher, “Good morning!” She waves back, “Good morning girls.”
“She’s so elegant.” Koyuki sighs, “I know.” Genya says in sympathy. Kanae walks closer to them, “You two look so cozy, very prepared for the weather.”
Koyuki blushes and fiddles with the end of her scarf, “Clearly you both have someone who cares enough to remind you to dress warmly.” Kanae sends a little glance towards Genya in particular, she knows the amount of fussing that Sanemi does toward Genya. Not only because she's work-friends with him but because she’s often invited to dinner. It makes Genya’ face red like a tomato. Knowing that someone knows just how overbearing and fussy her older brother can be. It makes her worry sometimes that Kanae will find out the inappropriateness of their relationship, that his care extends beyond what is acceptable.
“Thank you.” The girls say in unison. “What are you doing walking to school so late in the morning Kanae-sensei?” Genya asks, “Don’t teachers have to arrive super early?” Koyuki follows up.
“Ah well… I missed my alarms and my sisters tried waking me up but…”
Oh wow, Kanae-sensei’s fatal flaw is that she’s a heavy sleeper.
“Anyway, that means that I just have less time for my planning period. Oh well.” She doesn’t seem too ruffled by the change in schedule, her effortlessness is maintained.
They’ve reached the school gates, “It was lovely speaking to you girls, I wish you luck on your civics quiz today.”
“Thank you!” The girls say in unison, again. The students' anxieties about the civics quiz seem to have even reached the ears of teachers.
———
“I hope when I grow up I end up like Kanae-sensei, an elegant, put-together woman.” Koyuki sighs wistfully as she slips off her street shoes and steps into her school slippers.
“I feel like that’s maybe too ambitious of a goal for me,” Genya places her shoes in her locker, taking care not to scuff them. She remembers watching Sanemi buff out the scuffs on her loafers one night, and she vowed to never again let them be harmed. She can tell that he still spends time shining them though, she can smell the shoe polish on his hands when he slips in behind her in bed. It’s sweet.
“But I believe you can do it Koyuki.”
She gasps and grabs Genya’s hands, “Thank you! I’ll strive to be the best celestial maiden I can be!” [2]
“Celestial maiden …?” But Koyuki is already on her way to her homeroom, waving goodbye to Genya as she runs down the hall.
Genya huffs and shakes her head.
———
She finds the Kamboko squad on the roof doing last minute revisions for the civics quiz.
“You guys are not serious people!” She screeches.
Zenitsu whips his head around from where it was previously shoved in the civics literacy textbook, “You be quiet Mrs. Thirteenth in the class! You don’t understand the struggles that us normal people suffer through to scrape by.” He screeches. [3]
Next to him, Inosuke shuffles flashcards like they’re actual playing cards and Tanjiro pats the space next to him for Genya to sit. “Don’t pay attention to him, he fell asleep cramming last night and is sections behind.”
“Ah, I see.” Genya sits on her knees, her skirt spreading out. “Is that a new scarf?” Tanjiro blushes, “You noticed.” Smiling, he says “Kanao bought it for me.”
Zanitsu’s wailing interrupts “No need to remind me of not only your academic success but your romantic as well!”
“Maybe if you didn’t rely on cramming so much you wouldn’t be here on this roof so worried.” Tanjiro says with a blank smile.
“DON’T ACT SO SMUG!!” Zenitsu chucks an eraser at Tanjiro’s head and then goes back to intensely staring at the textbook. Just across from him, Insuke seems to have given up trying to shuffle the flashcards and instead he begins to look around the roof for something else to occupy his attention.
Tragically his eyes land on Genya. “Oi! Ganchoporo” there is no hope of getting him to pronounce Genya’s name it seems.
“That cat charm,” Insouke points to the stuffed cat hanging off of her school bag. Geny looks down at it and back to Insuke, confusedly asking, “Yes? What about it?”
“Why do you and Shinazugawa-sensei have the same one?” Tanjiro looks over at Genya, “I would never expect Shinazugawa-sensei to have such a cute bag charm. How did you even notice?”
Inosuke, without any shame says, “I saw it when I snuck into the teachers lounge trying to find the answer sheet for the next math exam.”
“You can’t say that out loud!” Zenitsu slaps his hand over Inosuke’s mouth, “Are you stupid! That man will kill you if he finds out, the best thing you can do is pretend that never happened and take it to your grave.” A moment lapses, “Did you find the answer sheet though?” Zenitsu quietly asks.
Genya and Tanjiro look on with abject disgust. ‘Shameless’, is the thought they both share. “I got a duplicate at a gachapon and gave it to aniki, I honestly didn’t think he would put it on his bag.” It feels like everyone today seems to notice the intimacies of their relationship, first Kanae and now the rest of her friends.
Tanjiro smiles, “I think it’s sweet that he wears such a cute charm, even if it clashes with his manly and demonic aura.”
Genya is stunned, “What did you say?” She feels a vein crawl across her forehead.
———
The Komboko squad takes the quiz first because Himejima-sensei is their homeroom teacher; they decide to warn Genya on their way to Uzui-sensei’s classroom.
“Genya!” Tanjiro says just outside of the Kabosu classroom, and makes a beckoning motion. Zenitsu pushes Tanjiro out of the way and grabs onto Genya like a spirit trying to drag her to hell.
“Genya… it was so bad!” Zenitsu sobs out, “I’m going to fail and flunk out of high-school, and I’ll have to turn to busking on the street for yen!” He grips her shoulders, “Stay strong Genya.” His face is set in a nasty frown and is white as a sheet. “Get off me you bastard!”
Tanjiro pushes him off her, "Ignore him, please. It really wasn’t that bad, I think you were right about Himejime-sensei just wanting to scare us into studying a little harder.” So reassuring.
“Well… thank you for the warning, I think you guys should start running though. Insouke’s already left you all behind and the bell is going to ring.”
The pair turn to look down the hall and see Inosuke at the very end, turning a corner. Oblivious or uncaring of leaving his friends behind.
“Inosuke!!!” Zenitsu takes off running and screaming down the hall, Tanjiro follows right behind him. This alerts Sanemi.
“You assholes! I’m teaching class right now so stop fucking running and screaming down the hall.” He turns and spots Genya standing in the doorway, “You.” He points at her, “I want to see you during lunch.” And then he slams the sliding door shut and returns to teaching.
‘Am I in trouble?’ Genya thinks. But that thought is quickly pushed to the side when Himejima-sensei enters the classroom with a stack of tests, and asks for everyone to sit down.
———
The civics quiz was truly unremarkable. If Zenitsu actually failed that exam she’ll be amazed, impressed even. Now the only thing weighing on her mind is ‘nemi’s cryptic demand in the hallway. She rolls it around in her mind, wondering what she could have done to upset him enough to demand her presence during his precious lunch period.
The rest of her day until lunch is a blur. Eventually, the bell for lunch dismisses her and her classmates, she thinks of maybe going to the canteen and buying some ohagi and a bottle of houjicha [4] for ‘nemi but she decides against it. If she gets to the teacher break room earlier enough that will be enough to temper his annoyance.
Genya shyly opens the break room shoji, trying her best to not to make any noise. She peeks inside and spots Sanemi, angrily grading homework. “Shinazugawa-sensei ?”
He looks up from his stack of papers, “We’re alone, you don’t have to call me that right now.” He makes a ‘come here motion’ and turns his chair towards her. She makes her way over, “Where can I sit?”
Sanemi looks annoyed already, “On my lap dumbass” and pats his thigh. “Oh! Sorry,” she ducks her head and sits down on his available thigh. It’s thick and corded with muscle so it’s easy for her to sit on, but she still feels bad. She’s not as light and dainty as other girls her age. What if she’s crushing him?
“‘Nemi… are you sure this is comfortable, I know I’m a bit” she trails off. This seems to further annoy an already irritated Sanemi.
“Ha!? You think I’m some weakling who can handle his little sister sitting on his lap?” he scoops up her legs, which had been dangling off to the side, and tugged them horizontally, tugging her even closer. Her body squished against his toned chest. “Do you think I’m working out for the looks? Jeez.”
He begins to bounce her on his thigh, like she’s a child. “Don’t worry about a ridiculous thing like that. Just do what I tell you. OK?” Genya looks down in embarrassment, hands clasped together on her lap “Okay.” Silence blankets the siblings, “Where are the rest of the teachers?”
“They’re eating in the canteen today, don’t worry about it. No one is gonna walk in on us.” he pauses, “And, if they do then I’ll deal with it.” This does not inspire much confidence in Genya. Conversation lulls again and Genya is left contemplating why she’s sitting here in her aniki’s lap. It’s soothing, but she’s still curious as to why he called her over during lunch. It couldn’t only be to do this? Could it?
“‘Nemi? Why am I here?”
He sighs, “Because I want you here. Is that a good enough answer?” Genya’s face pinches, “I was just wondering.”
“I just wanted to see how you were doing, you were worried about your quiz, tell me how that went.” Genya perked up a bit at the attempt of small talk, and went on to detail the rooftop study session, and the Komboko squad’s impromptu warning. But in the end, she says, “It really wasn’t that bad, you were right.”
He smiles “Of course I was.” He runs a hand through her hair and down her back, where it eventually lands on her ass.
Right now?! Genya knew her brother was insatiable at home, but at school. It only ever extended to heated glances and quick squeezes. But this was no mere squeeze! His hand languidly groped the meat of her ass and thigh, leaving her hot and nervous. How would they explain this to a teacher if one of them walked back in?
His hand slipped up her skirt, leaving her exposed to the room, thank god she wore her thermal tights or everything would be out. “‘Nemi!” She hissed, “here? Right now?” She looks back at the door nervously, “what if someone” she weakly trails off again, a habit she seems to develop only in the presence of her brother.
“Hm? I’m not doing anything,” his hand drops as he lazily drawls “I just got distracted. Not like I can do anything with those tights on.” He tacks on with a rumble, “Tell me about the rest of your day.”
Oh he’s evil. Thinks Genya, he is really, really evil. He did this this morning too, this bastard. She won’t give in, her pussy is wet and it’s annoying her now. He needs to take responsibility. “No” Genya says and moves to straddle him, her legs bracketing each side of his. “I want you to take care of me.”
He scoffs, “What do you think I do all day, hm?” His hands slide up and down the backs of her thighs, cupping the softness. The feeling is muted through her thick thermal tights but it's still as arousing.
She moves to grind down onto his bulge but his grip on her thighs prevents her from grinding down. He moves his face closer to hers and purrs “I want you to say it. You’re usually way more vocal at home.” He teases.
Instead of playing along, Genya grips Sanemi’s ear between her fingers and twists as hard as she can while whisper-shouting “You bastard, you tease me when I wake and you're teasing me now. Take some responsibility!” Sanemi crumples and gives in immediately, “Let go, let go, I will, you ass.”
“Ass!? Me?” Gena huffs and stands up, turning to leave. This escape plan is immediately thwarted by Sanemi’s grip around her waist, tugging her to sit back in his lap. “Jeez, a guy tries to have a little foreplay and you immediately try to rip my ear off.” He presses a kiss to the back of her neck, “I’m sorry, I didn’t know my teasing this morning would piss you off so much. Next time I’ll make sure to finish what I start.”
Genya pouts, “I want your cock in me now.” Sanemi’s brows raise, “I was just planning on fingering you a little and then really fucking you when we got home.”
“Are you kidding me!” Genya almost whips around to really try and rip his ear off, “I’m sorry! I really didn’t think it would piss you off so much. I thought the teasing would be hot,” he adds “you usually like it when I make you work for it.”
Genya sighs, he always takes things too far, she thinks to herself. “Yeah, but not all day teasing,” she settles back into his lap, grinding her ass into his bulge as punishment, “you should be glad I was worried about that damn quiz all day, and then spent the rest freaking out about what you wanted me in the teacher lounge for.”
His arms tighten around her middle and he lets out a little puff of breath, “Next time I won’t try and pull any shit like this.”
“Thank you ‘nemi.”
“We have thirty-five more minutes to ourselves before lunch is over. If you’re still interested.” Sanemi mumbles into the side of her neck.
“If you left me high and dry after that I was going to kill you.”
———
They find themselves in the teachers restroom, which is a spacious single stall with a toilet and sink. And, most importantly, a door that locks.
Genya hurriedly kicks off her slippers and pulls off her socks, then she tugs her tights and undies all the way down in one smooth motion. Sanemi simply just has to unbuckle his belt and unzip his fly, so he gets to watch as Genya hikes her skirt up and pulls her patties down. The smooth expanses of her legs bare and free for him to oogle.
“Okay, we’re on a time crunch,” he picks her up from her armpits, “wrap your legs around me.” He sets the edge of her ass on one of the grab rails and squishes the rest of her body into the wall. She whimpers slightly at the squeeze. One hand presses her against the wall and the other slithers between their bodies and down to her pussy.
“Wow, you’re really wet.” Genya’s face inflames, “You were just teasing me like five minutes ago, what did you expect?”
Sanemi hums, “It’s so sweet how you get so wet after a little bit of teasing from me. Your body is so eager.” His thumb moves to circle her clit, pressing down intermittently. His hand is surprisingly calloused for his line of work, it works out for Genya though. The callouses add a nice amount of texture for when Sanemi’s hands brush against her body, and now even better as it rubs against her clit.
Her panting fills up the room, her pleasure building quickly after Sanemi’s day long teasing. “This is all the lubricant I can give you, do you think you can handle an orgasm?” He ground out, just as affected as she is.
She grinds down on his hand as much as she can in her position, “Uh huh” she whimpers out. This seems to egg him on further, quickly moving his hand away from her cunt to tug his underwear down enough to let his cock spring free. Then just as quickly, his hand moves back to its ministrations.
Genya stares down at the space between their two bodies, hungrily eyeing her ‘nemi’s fat cock. She tries to grind down again, but Sanemi’s other hand tightens its hold on her, she watches as the muscles shift under his skin and veins bulge. It’s so hot. Being taken care of by someone so much stronger than her makes her tummy warm and fluttery. Especially now, holding her body up with just a hand and his body weight, it feels exciting.
“Stop moving, just let me do this.” His thumb speeds up and she starts to unravel, her previous thoughts and the addition of pressure and speed cause her to hurtle closer and closer to orgasm. Just a little more and she can finally fall over the edge. Almost like he read her mind, Sanemi grinds the underside of his cock through her cunt, just enough extra stimulation that the tension building in her lower stomach finally dissolves into a satisfying orgasm. Her whole body loses all its tension and she sinks into Sanemi’s hold.
He helps her ride out the rest of her orgasm, slowing down his movement to just a slight grind of his thumb into her clit. Eventually slowing down all the way to a halt. He watches as her face loses all of its tension and a satisfied look overtakes her instead. Perfectly relaxed is how he needs her, no lube means he needs to get her as loose and relaxed as possible, which certainly a task with how high strung Genya gets.
He’s figured out a switch to get her into the floaty, sweet pace that he needs her in. Getting bossy and shows of strength make her lose all sense, like her brains melt out of her ears. It’s so cute to watch as her thoughts seemingly disintegrate behind her eyes.
He presses a kiss on her cheek and slips a single finger into her cunt. “Mhmmm, ‘nemi, why are your fingers so big?” He chuckles, and starts to slowly move his finger in-and-out, stroking the inside of her walls on the way out, slow and deliberate. After a few seconds of that he slips a second finger in, Genya’s cunt squeezes and pulses around the sudden girth. It’s quicker than Sanemi would like, wanting to make sure the build up is long and pleasurable. However, they have less than twenty minutes together and Sanemi wants to make sure it counts.
Eventually, Sanemi has three thick fingers shoved up Genya’s cunt. She’s spread wide and dripping between them, her little moans and whimpers echo off the walls. The slap of his palm against her cunt adds to the lewd noises filling the room, trying to quickly finger her open enough to shove his aching dick inside her. ‘Fuck it.’ he thinks, he needs to fuck her now or they’re gonna both be late. And Genya has always liked it a little rough. Right?
He slips his fingers out and uses the slick still clinging to them to wet his cock, trying to stretch their only lubricant as far as it can go. While he pumps his cock, he moves his arm underneath her knee and pushes it up next to her ear. She moans at the stretch, knowing what’s coming.
She looks up to the ceiling, it's a weird fear of hers—being penetrated. It’s the same feeling that she feels when she has to get a shot, she can’t watch the needle plunge into her arm or else it’ll hurt worse. Watching his cock sink into her heat is just too much for her. She feels the head slap against her entrance and the initial pain as it sinks into the tight hole. She counts the tiles on the ceiling as Sanemi adjusts, he lifts her other leg up to her ear, increasing the stretch.
Then he starts to sink further in. The warmth starts to spread through her whole body. While Genya stares up at the ceiling Sanemi’s intense gaze is trained on where her pussy opens up around I cock. It’s obscene how something so delicate stretches around his dick. It almost makes him feel sick with excitement. He feels a vein bulge on his forehead as he holds himself back from slamming all the way in. It’s a tight rope walk of trying to go quickly but also maintaining gentleness.
Eventually, his balls sit snugly against her cunt, a small squelch as he hilts all the way inside her. Genya’s breath hitches and she looks down, her pussy’s swallowed up all of her aniki’s cock. She can feel the head kissing her cervix. Sanemi looks up at her face, she can see him exercising every thread of self restraint.
He watches her face, she’s panting, sweat drips down the slope of her jaw and collects at her stubborn chin. He could sit in this school bathroom all day and stare at her face. He doesn't know what he did in his past life to be blessed with such a darling little sister but he knows he’s going to savor every day he gets to spend with her. He always gets sappier than usual when he sticks his dick in her.
He leans up and kisses her sweetly, jostling his cock in her. Her plush lips against his, his younger darts out to lick along the softness. “Is that lipgloss?”
Genya, somehow, blushes even further, going from a dusting of pink to a deep red. “Sorry,” she always feels so silly when ‘nemi notices she has makeup on “I know it’s against dress-code.”
Sanemi huffs against her face, “It’s fine.” He presses another kiss to her lips, this one sloppier than the last. Genya opens her mouth with an ‘ah’ letting her ‘nemi inside another one of her holes. They kiss like this for a while until Sanemi breaks, panting into her open mouth he says, “I’m not going to last long.” Geny nods her head, “me neither.”
“Can I come inside?” Sanemi asks perfunctionally, knowing she would never deny him, but still wanting to hear it. “Yeah—of course.”
That’s enough for him to start to slowly thrust inside of her, not going too far outside of her heat, wanting to savor the warmth and wetness of her cunt that's opened up so nicely for him. The sex is slow and intimate, the quietness of the bathroom adds to it, allowing for the sounds of their coupling to be emphasized. Sanemi can hear every little ‘ah ah ah’ and ‘mhhnnn’ that Genya lets out; Genya can hear every grunt and groan that Sanemi lets escape his lips, and the wet squelching and slapping of their bodies coming together is louder in the mostly silent room.
Sanemi’s thrusting speeds up slightly, shoving Genya up and down the wall slightly, his hands grip the backs of her knees tighter; veins on his arms raised. It’s so hot watching her brother become more and more entrenched in the pulsing wetness of her cunt. Her arms languidly hang off his shoulder, her hand lazily moves up to pet the underside of Sanmei’s hair, where it's shortest.
This, for some reason, spurs Sanemi further, his thrusts heavier and sloppier. His right hand lets her leg down and returns to rubbing her clit, messier and rougher than before. Trying his best to get her to cum along with him. She feels the tightness return, and she knows ‘nemi is close behind.
She tightens her grip in his hair and pulls him close, pressing her mouth to his, desperate for the intimateness. This sends him barreling towards orgasm, his balls tighten up and the knot in his stomach becomes tighter and tighter with tension. “Cum with me.” Not an ask but a demand, his hand speeds up its rough ministrations.
“I’m gonna—ah!” She squeezes her eyes shut and kisses Sanemi again, desperate for something to anchor herself to. The tension in Genya’s stomach snaps and a flood of wetness pours from her, “I love you” she whimpers out. Her walls squeeze and pulse around Sanemi’s cock, pulling him over the edge with her. His abs tighten and the feeling of orgasm washes over him “I love you too.”. Genya feels as his cum pours into her, warm and wet.
They sit there together, for a moment, just the sound of their panting. All tension from either of their bodies evaporated by the heat of orgasm. “I’m gonna move you.” is what breaks the blanket of silence, Sanemi picks her up and set her down on the toilet, in the process removing his cock from the tight grip of her cunt. A torrent of cum leaks out of her and into the toilet as a result. The noise of it hitting the water sets Genya off “ ‘nemiii” she whines, uncomfortable with the feeling and sound of his cum leaing out of her.
He sighs, “You're fine. Stop complaining.” He wipes off any residue left behind from his pants and bends over to start picking up Genya’s clothes. He kneels in front of her and delicately slips her feet through the holes of her underwear and then into her tights. The cloth pools at her feet as she wiggles and squirms and the feeling of cum dripping out of her. “Do I have to wipe you like your five again?” Genya pouts, unamused with his teasing.
He gives in quite quickly and does help her clean up and get dressed, pulling her tights up and putting her socks and slippers on as she leans against the door. The childish comfort soothing her already delicate mindspace and the care pacifying Sanemi’s overprotective edge.
“Do you think you can make it to class alright? I can write you a pass and you can sit with Tamayo in the nurses office if you’re not feeling up to it.” He pets up and down her back as he says this, crowding her against the door. “Mhmm … I’m good.” She looks to the side, pink still dusting her face. Sanemi thinks she looks so pretty in the moment, his face has a tender smile across it, an expression saved only for these delicate moments shared between the two siblings. “Can I have a kiss before I leave?” She looks up at him, her lips puffy and inviting.
“Of course,” and Sanemi leans down, cupping her face, and presses a soft kiss to her lips. Letting it linger but not pushing further, basking in the vulnerability for a moment longer. They break apart at the chime indicating the end of the lunch period. He brushes her hair back “I’ll see you at the end of the day, okay?”
“Okay.”
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