shortstack (and the brother who wasn’t annoying anymore) (18+)
art creds: mochikuyo, aliyartss, thatsallitchief
shoko’s your best friend, literally since elementary school. you two have been INSEPARABLE since the day you met. but theres just someone who’s never really caught your eye until now. her older brother, satoru gojo. what happens when the two get too close to one another?
content warning: this fic contains explicit smut (including oral, fingering, and penetrative sex). there’s heavy sneaking around and multiple near-misses with shoko catching you. lots of fluff and soft moments mixed in.
you’ve known satoru gojo literally forever.
like, since you and shoko were in elementary school and he was that tall annoying kid who’d show up to pick her up after class, blindfold already on even back then, tossing mochi at your head and calling you shortstack while laughing like it was the funniest thing ever. he was just shoko’s older brother. loud. cocky. always eating sweets and dodging responsibility. harmless background noise.
shoko was your person though. your best friend since forever. the one who’d sneak you into her room for late night talks, share her earbuds, complain about curses and exams and how her brother never shut up. you two were tight. she was protective in that quiet way. rolling her eyes at anyone who looked at you too long, always making sure you got home safe, texting you “you good?” even when she was buried in med stuff at school.
satoru? he was just there. part of the furniture. you’d roll your eyes when he ruffled your hair too hard or stole the last pocky from your bag. “grow up, gojo,” you’d mutter. he’d just grin wider, those stupid blue eyes flashing even through the blindfold.
but then something shifted.
it was subtle at first. you were all hanging out at their place one random weekend. shoko was half-asleep on the couch after a long shift helping at the hospital, cigarette smoke still lingering in her hair. you were in the kitchen grabbing drinks when satoru walked in, fresh from a mission or whatever secret strong sorcerer shit he did. his hair was messier than usual, jacket slung over one shoulder, and when he reached past you for a bottle of water his arm brushed yours. nothing crazy. but you noticed how warm he was. how tall he actually was when he stood that close. how his voice dropped a little when he said “thanks, shortstack” instead of the usual loud tease.
you shook it off. stupid. it was nothing.
except the next week you caught yourself staring at him during movie night. he was sprawled on the floor in front of the couch, long legs everywhere, laughing at some dumb scene while shoko threw popcorn at him. his shirt rode up a bit when he stretched and you saw the line of his hip, the faint scar there from who knows what. your face got hot. you looked away fast, pretending to check your phone.
shoko noticed though. she always did. “you zoning out?” she asked later, nudging your shoulder as you both brushed your teeth before bed. her eyes were sharp even when she was tired. “or is my idiot brother annoying you more than usual?”
“same old,” you lied, spitting toothpaste. “he’s harmless.”
she hummed, not fully convinced, but let it drop. for now.
the texts started innocent.
satoru had your number from years ago. group chats, emergency pickups, whatever. but now they came more often. random memes at midnight. a picture of him with a mountain of kikufuku and the caption “jealous yet?” you’d reply with an eye roll emoji, but you smiled every time your phone lit up.
then one night he sent “you still awake? shoko crashed early. come downstairs if you want real snacks instead of her healthy shit.”
you shouldn’t have. but you did. crept down the stairs in your oversized off-shoulder tee and shorts, heart beating a little too fast. he was in the kitchen, blindfold off, those eyes glowing soft in the low light. he held out a mochi for you, fingers brushing yours when you took it.
“you’re gonna get me in trouble,” you whispered, glancing toward the stairs.
“only if we get caught,” he said, voice lower than usual, smirk playing on his lips. he leaned against the counter, watching you eat like it was the most interesting thing in the world. “you’ve been looking at me weird lately, shortstack.”
your cheeks burned. “have not.”
“liar.” he stepped closer, just enough that you could smell his cologne mixed with whatever sweets he’d been eating. “it’s cute.”
you shoved his chest lightly and bolted back upstairs before shoko could wake up. but you lay in bed after, replaying the way his eyes had lingered, the warmth of his fingers. fuck. this was bad.
the almosts piled up after that.
one afternoon you were all at a café near campus. shoko stepped outside for a smoke, leaving you and satoru at the table. he immediately slid his chair closer, knee pressing against yours under the table. “missed you,” he murmured, even though you’d seen him yesterday.
“we live in the same circle, idiot,” you whispered back, but you didn’t pull away.
his hand found your thigh under the table, thumb stroking slow circles through your jeans. your breath hitched. he just smiled innocently when shoko came back in, chatting about some patient like nothing was happening. you had to excuse yourself to the bathroom to calm down, heart racing the whole time.
another time he drove you home after shoko got called in last minute. rain was pouring, wipers going steady. he parked a block away from your place “just to talk.” talked turned into him leaning over the console, hand cupping your jaw, lips inches from yours.
“tell me to stop and i will,” he said, breath warm.
you didn’t. the kiss was slow at first, testing, then deeper when you kissed back. his tongue brushed yours and you made a soft sound that had him groaning quietly. his hand slid into your hair, tilting your head just right. you were both breathing hard when you finally pulled apart, fogging up the windows.
“we can’t keep doing this,” you said, even as you leaned in for one more quick kiss.
“sure we can,” he grinned, thumb wiping lipstick from his mouth. “just gotta be careful. shoko would kill me if she found out i’m corrupting her best friend.”
you laughed despite the nerves. “she’s protective for a reason. you’re a menace.”
“your menace now,” he teased, but there was something softer under it.
the sneaking got bolder but the close calls got scarier.
you started “studying” at their place more often. shoko would be in her room cramming or napping after shifts, and satoru would text you from downstairs. you’d slip down and end up on the couch with him, his arm around your shoulders, fingers playing with your hair while you pretended to watch whatever show was on. he’d lean in during quiet moments, kissing your neck soft and slow, whispering “you smell good” or “been thinking about you all day.”
one night shoko almost walked in. you were in the laundry room of all places. satoru had pulled you in there for “two minutes” after you helped fold towels. his hands were under your shirt, mouth on yours, hot and hungry, when you heard shoko’s voice from the hallway. “yo, anyone seen my charger?”
you froze. satoru pressed a finger to your lips, eyes sparkling with mischief even as his other hand stayed warm on your waist. he waited until her footsteps faded, then kissed you again, deeper, like the risk made it better.
“you’re insane,” you hissed when you finally slipped out separately.
“you love it,” he shot back, winking as he passed you in the kitchen later like nothing happened.
shoko started commenting more. “you and satoru have been getting along weirdly well,” she said one evening while you two were making dinner and he was “helping” by stealing veggies. she eyed you both over her cigarette. “he’s not bothering you, right? i can tell him to back off.”
“he’s fine,” you said quickly, focusing on chopping onions so she wouldn’t see your face. “annoying but fine.”
satoru just laughed from behind you, close enough that you felt his breath on your neck for a second. “aww, sis, you jealous i’m stealing your bestie time?”
shoko narrowed her eyes but dropped it. still, you could feel her watching sometimes. like she knew something was off but couldn’t place it.
the tension built and built. stolen kisses in the car. his hand slipping into yours under blankets during group movie nights. late night texts that turned flirty “can’t stop thinking about how you sounded when i kissed your neck last time.” you’d reply blushing, telling him to behave, but you never wanted him to.
one weekend shoko had an overnight shift again. the house felt too quiet, too empty. you were supposed to just hang out and watch movies, but the second the door shut behind her satoru looked at you different. hungrier.
he pulled you onto the couch first, slow this time. no rushing. he kissed you soft and deep, hands roaming but patient, like he wanted to savor every second now that you had real time. “been driving me crazy,” he murmured against your lips. “all these almosts.”
you straddled his lap, fingers in his hair, kissing him back with weeks of built-up want. his hands settled on your hips, guiding you to grind slow against him. you could feel how hard he was already, but he didn’t push. just kissed you until your lips were swollen, then trailed down your neck, sucking lightly at the spot that made your breath catch.
“satoru…” you whispered, rocking against him.
“not yet,” he said, voice rough but gentle. “wanna take my time tonight. wanna make sure you know this isn’t just messing around for me.”
that made your chest feel warm. you pulled back a little, looking at him. hair messy, eyes soft and bright, no blindfold, no cocky mask. just satoru. your satoru now, somehow.
you kissed him again, slower, pouring in all the fluff that had been building under the tension. “i like you,” you admitted quietly between kisses. “like, a lot. more than i thought i would.”
he smiled against your mouth, big and genuine. “good. cause i’ve been gone on you for longer than you know, shortstack. used to tease you just to see you get all flustered. now i do it cause i can’t help it.”
you spent hours like that. making out on the couch, then moving to his room when it got too heated. clothes came off gradually. he peeled your shirt off like unwrapping something precious, kissing every inch of skin he revealed. you did the same, tracing the muscles on his chest, the old scars, loving how he shivered when your nails dragged lightly.
when he finally laid you back on his bed he took forever with his mouth between your legs. slow licks, teasing sucks, fingers curling inside you until you were trembling and moaning his name. he looked up at you the whole time, eyes locked, like watching you fall apart was his favorite thing.
you came once like that, thighs around his head, hand over your mouth to stay quiet even though the house was empty. he kissed his way back up, murmuring “so pretty when you come for me” and “my good girl.”
then you flipped him, wanting to return it. you took him in your mouth slow, learning what made his hips jerk and his breath stutter. he groaned your name, fingers gentle in your hair, praising you soft and sweet between curses.
when he couldn’t take it anymore he pulled you up, rolling you under him. condom on, he pushed in inch by inch, both of you groaning at how good it felt. he fucked you deep and steady, hips rolling perfect, one hand holding your thigh open, the other braced beside your head. every thrust hit that spot that made stars burst behind your eyes. you clung to his shoulders, nails digging in, whispering his name like a prayer.
“look at me,” he said, voice rough. when your eyes met his, something shifted. the cocky smirk was gone. just raw, open want. “been yours for a while now, y’know.”
your heart flipped. you pulled him down into a messy kiss as he sped up, both of you chasing release together. you came again with a broken moan, clenching around him, and he followed right after, burying his face in your neck as he spilled inside the condom, hips stuttering.
after, he didn’t pull out right away. just held you close, pressing soft kisses to your sweaty skin, murmuring fluffy nonsense that made you giggle.
“you’re staying the night, right?” he asked, voice sleepy and warm.
“what if shoko comes back early?”
“i’ll hide you in the closet,” he teased, but his arms tightened around you like he never wanted to let go. “kidding. we’ll figure it out. i’m not letting you go now.”
you traced patterns on his chest, feeling safe and warm and a little scared all at once. “this is gonna get complicated.”
“yeah,” he said, kissing your forehead. “but i’ve wanted you for longer than you know. worth it.”
you fell asleep tangled up in him, his heartbeat steady under your cheek.
morning came with shoko’s key in the door way too early. you both scrambled — clothes flying, giggles muffled, him shoving you toward the bathroom while he played it cool in the kitchen.
shoko walked in, took one look at satoru’s messy hair and your “just woke up” face, and raised an eyebrow. “you two look suspicious.”
satoru just grinned, sliding a cup of coffee your way, fingers brushing yours under the counter again. “morning, sis. coffee?”
you squeezed his hand quick before letting go.
shoko sighed, lighting a cigarette even though she wasn’t supposed to inside. “if you hurt her, i’ll dissect you myself, satoru. she’s my best friend.”
he laughed, but his eyes were soft when they flicked to you. “wouldn’t dream of it.”
you smiled back, heart full despite the nerves.
it was still sneaky for now. still risky. still a million close calls ahead probably.
but the way he looked at you — like you weren’t just his sister’s friend anymore, like you were his — made all the tension, all the waiting, all the almosts completely worth it.
and maybe, just maybe, shoko would understand eventually.
you were keeping this feeling all to yourself a little longer.
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shoko didn’t let it go easy.
she stood there in the kitchen, arms crossed, cigarette smoke curling around her like a warning. her eyes bounced between you and satoru, sharp and tired from the early shift. “seriously. spill. you two look like you just rolled out of the same bed and i know i left you on the couch last night.”
satoru leaned on the counter like he owned the world, popping a piece of candy in his mouth. “sis, your imagination is wild. we were just watching movies. late night snack run. innocent stuff.”
you stayed quiet, stirring sugar into your coffee way too long, cheeks burning. shoko’s gaze landed on you heavier. “you’re my best friend. if he’s pulling some shit on you, tell me. i’ll handle him. reverse cursed technique can hurt in creative ways.”
“he’s not,” you said softly, forcing a smile. “promise. we’re good. really.”
she stared a second longer, then sighed and stubbed out her cigarette. “fine. but i’m watching. both of you.” she grabbed her bag and headed out for whatever next errand, but the warning hung thick in the air.
the second the door closed satoru pulled you into a hug from behind, chin on your shoulder, laughing low. “close one number fifty-seven. you okay?”
you turned in his arms, burying your face in his chest. “terrified. but… yeah. worth it.” he kissed the top of your head, soft and fluffy, holding you tighter than usual. “we’ll tell her when it’s right. or when she catches us. whichever comes first.”
that day turned into a careful one. shoko came back earlier than expected again, so you and satoru stuck to innocent stuff. playing cards on the living room floor while she napped on the couch nearby. every time his fingers brushed yours reaching for a card your stomach flipped. he’d catch your eye and smirk, mouthing “later” when shoko wasn’t looking. the tension sat low and warm, building even when you couldn’t touch.
the next few days blurred into sneaky heaven and hell.
one afternoon you “helped” satoru with grocery shopping while shoko was at the hospital. the store aisles felt like a game. him cornering you behind the cereal display for a quick kiss, hand sliding down your back. “missed this,” he whispered, nipping your ear. you giggled and pushed him away before an old lady could see, but your whole body buzzed the rest of the trip. in the car on the way home he parked in a quiet spot, pulled you into his lap, and kissed you deep and slow until the windows fogged. no sex, just heavy making out and his hands under your shirt, thumbs teasing until you were panting. “wanna take you right here,” he groaned, but shoko texted asking where the milk was and you had to rush back, flushed and laughing.
nights were the hardest. when shoko crashed early you’d sneak into his room or he’d come to yours. not full on every time. sometimes just cuddling under the covers, his long body wrapped around yours, whispering fluffy stuff that made your heart ache. “you make all the loud shit in my head quieter,” he admitted one night, fingers tracing your spine. you’d whisper back how you used to think he was just the annoying brother, and now he was the person you couldn’t imagine days without. he’d get all soft-eyed and kiss you slow until you both fell asleep tangled up.
another close call came during a group hang at the park. shoko, you, satoru, and a couple others from school. everyone was sprawled on blankets, eating takeout. satoru sat next to you “by accident,” his thigh pressed firm against yours the whole time. when shoko got up to grab drinks from the cooler he leaned in fast, whispering “wanna ditch them later? my car’s parked close.”
you nodded before you could think, heart racing.
later, when everyone was distracted by some argument about curses, he grabbed your hand and tugged you toward the parking lot. you ended up in the backseat of his fancy car, windows tinted dark, making out like teenagers. his hands roamed under your shirt, thumbs brushing your nipples until you were squirming. you palmed him through his pants, feeling him throb, and he groaned your name low and wrecked.
“fuck, i want you so bad,” he panted, forehead against yours. “been hard all day just from sitting next to you.”
you were about to pull his zipper down when your phone buzzed. shoko texting “where’d you two go? don’t make me come find you.”
you both froze, then burst into quiet laughter. “rain check,” he said, kissing you one last time, sweet and promising. “but soon. i’m not waiting forever.”
the tension kept stacking. every almost made the want worse. you’d catch him staring during dinner, eyes dark and hungry even while shoko ranted about work. he’d send voice notes late at night, just his voice saying “can’t stop thinking about how you taste” or “imagine my mouth on you right now”, and you’d touch yourself listening, biting your pillow so you wouldn’t moan too loud.
shoko’s protectiveness ramped up too. she started asking pointed questions. “you’ve been staying over a lot. everything okay at home?” or “satoru’s not flirting with you, right? he does that with everyone but i’ll end him if it’s you.”
you’d laugh it off, heart pounding. “no boy trouble. and satoru’s always weird. you know that.”
she hummed, not convinced. “just… be careful. he’s strong as hell but he’s an idiot with feelings. if he hurts you i’ll kill him and hide the body with cursed energy.”
you almost choked on your drink. “he’s not. promise.”
but he wasn’t harmless anymore. not to you.
the night it finally boiled over was another overnight shift for shoko. she left around 8pm, kissing your cheek and telling you “text me if my brother annoys you too much.” the door barely closed before satoru had you in his arms, lifting you onto the kitchen counter like he’d been holding back for years.
this time there was no slow teasing at first. he kissed you desperate, tongue sliding against yours, hands everywhere. “need you,” he growled between kisses. “can’t do any more almosts tonight.”
you nodded, legs wrapping around him. “bedroom. now.”
he carried you there, kicking the door shut behind him. clothes came off faster this time but still with care. he peeled your shirt off slow, kissing down your collarbone, sucking marks along your chest that you’d have to hide with hoodies tomorrow. you tugged his pants down, wrapping your hand around his cock, stroking him until he hissed and bucked into your fist.
“on the bed,” he said, voice rough. he laid you down gently though, like you were something precious, then spread your legs and buried his face between them. his tongue was relentless. long licks, sucking your clit, two fingers curling deep inside you. you came fast the first time, thighs shaking around his head, moaning his name loud because the house was finally empty.
you returned it, taking him in your mouth until he was cursing and tugging your hair gentle. then he flipped you, condom on, sliding in deep from behind at first, then turning you so he could see your face. he fucked you deep and steady, one hand rubbing your clit, the other braced beside your head. “look at me,” he whispered when you got close again. you did. eyes locked on those bright blue ones and the moment felt huge. raw and open and real. “been wanting this. wanting you.”
you came together that time, clinging to each other, his face buried in your neck as he moaned your name. after, he pulled you down onto his chest, both of you sweaty and breathing hard. him stroking your back slow, pressing kisses to your hair, your temple, your lips. fluffy and warm and perfect.
“stay right here,” he murmured. “whole night. no sneaking out. i wanna wake up with you.”
you smiled against his skin, heart full. “what about shoko in the morning?”
“we’ll deal with it. or i’ll just tell her i’m keeping you.” he tilted your chin up for a soft kiss, lazy and sweet. “been falling for you for a while, shortstack. this isn’t just sneaking anymore for me.”
you kissed him back, whispering “me too” against his lips. it felt big and scary and perfect.
morning came too soon again. shoko’s car pulled in earlier than expected. some shift swap. you both scrambled, laughing quietly while throwing on clothes. satoru shoved you toward the bathroom to “fix your sex hair” while he played innocent in the kitchen.
shoko walked in, took one look at the two of you, and sighed deep. “okay. seriously. what the fuck is going on? you think i’m blind?”
satoru tried to deflect with sweets and jokes, but you saw the way he glanced at you. protective now too, like he’d take whatever lecture came if it meant keeping this.
you squeezed his hand quick behind the counter.
it was still risky. shoko was gonna be pissed when it all came out, probably threaten him with her reverse cursed technique in creative ways. but the build-up, the tension, the stolen moments and soft nights… it was all worth it.
satoru looked at you across the kitchen, eyes soft and cocky at the same time, and mouthed “worth it.”
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shoko didn’t exactly give her blessing, but she stopped the death glares. mostly.
instead she started with the side comments. “if you two start moaning while i’m trying to sleep i’m blasting cursed energy through the wall” or “satoru, keep your hands above the table or i’m telling megumi you’re a bad influence.” you’d blush and satoru would just laugh, pulling you closer on the couch like he was daring her. it was weirdly comforting. your best friend still had your back, even if her brother was now tangled up in it.
the first week after the talk felt like testing new ground. no more full hiding, but the sneaking didn’t die. it just got sneakier in different ways.
one afternoon shoko was home studying for some advanced healing technique, notes everywhere. you and satoru were “helping” in the kitchen, which meant him pressing you against the fridge while you tried to make sandwiches, his mouth on your neck, hands sliding under your shirt slow and teasing. “quiet, baby,” he whispered when you let out a soft sound. “sis is right there.” his fingers dipped into your waistband, rubbing light circles that had your knees weak, but you heard shoko clear her throat from the living room and you both froze, then burst into giggles like idiots. he stole one last kiss before stepping back, adjusting himself with a grin. “later. promise.”
later came when shoko finally passed out on the couch around midnight. satoru tugged you to his room, door locked this time, and took his time undressing you. mouth everywhere. collarbone, breasts, stomach, murmuring how pretty you looked, how he couldn’t get enough even when he could touch you openly now. he ate you out slow on the edge of the bed, your thighs over his shoulders, fingers curling deep while his tongue worked your clit until you were biting your hand to stay quiet. you came twice before he even got inside you, then he fucked you deep and steady on your back, eyes locked, whispering “love you” every time he bottomed out. it was intense and fluffy all at once. his forehead against yours, hands intertwined, coming together with soft moans muffled in each other’s necks.
after he held you close, stroking your back, pressing lazy kisses to your hair. “this feels better than all the sneaking,” he said softly. “but the sneaking was hot as hell. we keeping a little of that?”
you laughed into his chest. “yeah. keeps it fun.”
shoko started warming up in her own dry way. she’d roll her eyes when satoru fed you bites of his mochi during dinner, but once she muttered “you two are disgustingly cute. don’t fuck it up.” you took that as progress. she even covered for you once when a mission call came in for satoru late at night. “tell them he’s busy with family stuff” while winking at you like she knew exactly why he wanted the night free.
but protectiveness never fully left. one weekend you all went out to a festival. lights, food stalls, crowds. satoru won you a stupid big stuffed animal at some game, then pulled you behind a stall for a quick makeout, his hands on your waist, tongue lazy against yours. shoko found you two minutes later, arms crossed. “public indecency? really? i’m pretending i didn’t see that, but if anyone from school asks i’m saying you’re just friends.”
satoru grinned, arm around your shoulders. “thanks sis. love you too.”
you squeezed his hand, heart warm. the three of you spent the rest of the night eating too much sugar, shoko complaining about the crowds but smiling when satoru bought her favorite cigarettes. it felt like family, messy but real.
the tension built again over the next days in smaller moments. satoru would text you filthy things during class. “thinking about how tight you were last night, can’t focus”, making you hide your phone and blush. at home he’d pull you into the laundry room for five minutes of grinding and heavy petting while shoko was on a call. “miss the risk a little,” he’d admit, voice rough, hand between your legs over your clothes until you were panting. but he’d stop before it went too far, saving it for when you had real time.
one night shoko had another overnight. the house felt like yours again. satoru didn’t rush this time either. he cooked actual dinner (ramen, but fancy with toppings), then slow danced with you in the living room to some dumb playlist, hands on your hips, foreheads touching. “never thought i’d get this with you,” he said quietly, that cocky edge gone. “used to tease you just to see you smile. now i wanna keep making you smile forever.”
you kissed him soft, melting into the fluff. “you’re stuck with me now, gojo.”
things heated when you made it to the bedroom. he laid you down, kissing down your body like he had all night. fingers and tongue worked you open slow. three fingers curling just right, sucking your clit until your back arched and you came with his name on your lips. you rode his face after, his hands gripping your thighs, encouraging you to use him until you came again, shaking.
then he flipped you, sliding in deep from behind, one hand rubbing your clit, the other braced beside your head. “feel so good,” he groaned, pace building steady and hard. “my girl. all mine.” you pushed back to meet him, moaning into the pillow, and when you came the third time he followed, burying deep and holding you tight through it, whispering praises and “i love you” over and over.
aftercare was amazing. him running a warm cloth over you, pulling you into his chest, feeding you leftover mochi in bed while you talked about nothing and everything. “shoko’s gonna kill us if we’re too loud next time,” you teased.
“worth it,” he said, kissing your temple. “everything with you is.”
the next morning shoko got home to find you both in the kitchen making breakfast, satoru’s arm around your waist while you flipped eggs. she sighed but there was a small smile. “you two are domestic as hell now. gross. but… cute. don’t make me regret not murdering him.”
satoru grinned, flipping a burnt pancake. “love you, sis.”
you leaned into him, feeling settled in a new way. there were still stolen kisses when shoko wasn’t looking, still risky quickies in random rooms because the thrill lingered, still protective lectures when satoru got too cocky. but the relationship felt solid. more dates (real ones, sneaking off to hidden spots or just lazy days in), more late night talks where he opened up about the weight of being the strongest, more moments where you realized this annoying brother had become your person.
shoko caught you kissing in the hallway one evening and just groaned “get a room—wait, you have one. use it.” then walked away muttering about “my best friend stealing my brother and vice versa.”
you and satoru looked at each other and laughed, then kissed again slower.
it wasn’t perfect. there’d be more close calls, more protective big-sister moments, more learning how to balance everything. but it was yours.
and yeah… still so worth it.
satoru caught your eye across the room one night during a quiet dinner with shoko, smiling soft and wicked at the same time.
this was just the beginning.
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shoko started calling it “the gojo-ieiri household circus” and honestly it fit.
she’d walk into the kitchen in the mornings to find satoru with his arms wrapped around you from behind while you made coffee, his chin on your shoulder, mumbling sleepy nonsense about how you smelled better than any mochi. she’d just sigh dramatically, grab her cigarette pack, and mutter “at least make enough for three if you’re gonna be gross in my kitchen.” but there was less bite in it now. sometimes she’d even smirk when satoru fed you a bite of his breakfast and you laughed.
the protectiveness didn’t vanish though. it morphed into big-sister threats wrapped in sarcasm. “hurt her and i’ll heal you just enough to feel every second of pain,” she told satoru one evening while the three of you watched a movie. he just pulled you closer on the couch and grinned. “noted. but i’m too pretty to die.”
you squeezed his hand under the blanket, heart warm. it felt like the three of you were settling into something new — not just you and satoru sneaking, but a weird little family unit where shoko was slowly accepting that her best friend and her annoying brother were a thing.
still, the sneaking didn’t stop completely. it was too fun.
one afternoon shoko was buried in med textbooks at the dining table. satoru texted you from across the room “bathroom. now.”
you excused yourself casually, heart already racing, and the second the door clicked he had you pressed against the sink, kissing you deep and hungry. his hands slid under your shirt, thumbs brushing your nipples while he ground against you slow. “been dying to touch you all day,” he whispered, voice rough. you palmed him through his pants, feeling how hard he was, and he groaned quietly into your mouth. it was getting heated fast. his fingers dipping into your waistband, when shoko knocked on the door. “if you’re fucking in there i swear i’ll curse the lock.”
you both froze, then laughed silently. satoru kissed you one last time, soft and quick, before you both fixed your clothes and walked out like nothing happened. shoko just raised an eyebrow and went back to studying. “you two are hopeless.”
the fluff kept sneaking in stronger too. satoru started staying over in your room more openly, or you in his. nights where he’d pull you onto his chest after missions, venting about the weight of being the strongest while you played with his hair. “you make it feel lighter,” he’d say softly, pressing kisses to your forehead. you’d whisper back how you used to think he was just shoko’s loud brother, and now he was the person you couldn’t imagine days without. he’d get all soft-eyed and kiss you slow until you both fell asleep tangled up.
one weekend he planned a real date. no sneaking around the house, just the two of you. he told shoko “we’re going out, don’t wait up” and she waved you off with “use protection and don’t do anything i wouldn’t do—wait, that’s nothing.” you laughed the whole way to his car.
he took you to a quiet spot outside the city. a hidden viewpoint with city lights twinkling below, blankets and snacks in the back of his car. it was fluffy as hell. he laid out everything, pulled you between his legs so your back was against his chest, and just talked for hours. about old days when he’d tease you as kids, about how he realized he wanted more when he saw you looking at him different that one night in the kitchen. “been yours longer than you know,” he murmured, arms tight around your waist.
you turned to kiss him, soft at first, then deeper when he cupped your face. the makeout got heated quick on the blankets. his hands roaming under your clothes, yours in his hair, both of you breathing hard. he had you straddling him, grinding slow while he sucked marks on your neck, whispering “want you so bad right now.” you were about to say yes when headlights flashed in the distance. some random car pulling up nearby. you both scrambled to look normal, laughing breathlessly. “date almost ruined by strangers,” he groaned, but he kissed you again anyway, promising “we’ll finish this at home.”
home meant back at the house with shoko already asleep. the second you were inside satoru had you against the wall in the hallway, picking you up so your legs wrapped around him. “been thinking about this all night,” he said, voice low and wrecked. he carried you to his room, kicking the door shut, and this time he didn’t go slow.
clothes came off fast. he laid you on the bed and kissed down your body, mouth hot and greedy, sucking on your nipples, then moving lower until his tongue was on your clit, two fingers pumping deep. you came once quick, moaning into the pillow, but he kept going, adding a third finger, curling just right until you were shaking and coming again.
you pushed him onto his back after, taking him in your mouth deep and wet, loving how he groaned your name and fisted the sheets. “fuck baby, your mouth—” he panted, hips twitching. before he could finish you climbed up, rolling a condom on him and sinking down slow, both of you groaning at the stretch.
you rode him hard, hands braced on his chest, his gripping your hips guiding you faster. he sat up halfway, arm around your back, thrusting up to meet you while his thumb rubbed your clit. “so good. love you like this,” he groaned, eyes locked on yours, bright and intense. you came hard around him, clenching, and he followed right after with a broken moan of your name, holding you tight through it.
after, the fluff hit soft and sweet. he cleaned you up gentle, then pulled you into his chest, stroking your hair and back. “best date ever,” he whispered, kissing your temple. “even with the almost-interruption. love doing normal stuff with you. love all the stuff with you.”
you smiled against his skin, tracing patterns on his abs. “love you too. even when you’re being a clingy menace.”
he chuckled, arms tightening. “your menace. always.”
morning brought shoko’s usual commentary. she found you both in the kitchen again, satoru making pancakes (badly) while you helped. she leaned in the doorway, coffee in hand. “date go well? you two look like you barely slept.” her tone was teasing now, less suspicious. “just don’t scar me for life with the noises next time.”
satoru grinned, flipping a burnt pancake. “no promises.”
you laughed and leaned into him, feeling settled and happy. shoko rolled her eyes but there was a small smile. “you idiots are cute. gross, but cute. just… keep treating her right, satoru. or else.”
he saluted dramatically. “yes ma’am.”
the days kept blending. more stolen quickies when shoko was distracted, more open cuddles on the couch, more late-night talks where satoru opened up about fears and you did the same. the tension never fully left (the risk still made everything hotter), but it felt balanced.
one evening shoko even joined you two for takeout without complaining too much, teasing satoru about “finally growing up” while you rested your head on his shoulder. it felt right.
satoru caught your eye later that night in bed, smiling soft and cocky. “told you it’d work out, shortstack.”
you kissed him slow. “yeah. worth every single close call.”
© miziyaos ۶ৎ ⋆˙⟡ ⊹ ࣪ ˖ ———
