me first | miya osamu
before you proceed, please note that this fic contains dark content, notably incest and dubcon (marijuana). please read all warnings before proceeding. by pressing read more, you are agreeing to view the work knowing the nature of the content.
— pairing: miya osamu x f!reader
— words: 4.8k
— warnings: incest, dubcon, drugs (marijuana), nonconsensual filming, oral sex (f! receiving), unprotected sex, creampie, possessive behavior. let me know if i missed anything and i'll gladly add more warnings
— update: there is a part two to this fic feat. miya atsumu titled my turn!
“Sorry, I can’t stay. Samu gets on my ass if I’m out late without telling him, but next week we’ll go out for sure!”
Your friends were used to this excuse by now, knowing how protective Samu could be. It wasn’t the first time you’d left a gathering early, but as you hopped on the train to begin making your way back to his apartment, your excitement about spending time with your brother began to outweigh the melancholy about having to miss out on Friday night plans again.
Truth be told, you’d never expected to be so close to either twin. You were what your parents referred to as a “happy little accident,” and the six year age difference meant that the twins were enrolled in primary school for most of your developmental milestones. They grew up with each other, and though you lived under the same roof and shared the same blood, you basically grew up alone.
It wasn’t for lack of trying though. You’d approached them with offers to play or asked them what they were up to to see if it was something you could join in on. But as twins and teammates, they preferred the other’s company over yours, and as time went on, you stopped asking to tag along on their adventures, knowing you’d be in the background anyways.
Life with them was reduced to politely silent dinners and lingering gazes when you passed by them on your way back to your room after your showers, or the occasional disruption when you had friends over.
Your status as an only child basically returned once they graduated high school and moved out, each one following their own path in life. Atsumu had gone pro, but Osamu had surprised everyone by hanging up his jersey for good, choosing to pursue cooking and opening up his shop.
Your three years of high school flew by, uneventful for the most part since you hid the fact that you were a Miya as well. For starters, enough time had passed that hardly any of your classmates knew of them. And secondly, the reputation they’d earned with some of the teachers at Inarizaki wouldn’t have been good for you anyways, and it never really felt like you were their sister anyways.
But despite your lack of relationship with either of your brothers, you’d been forced to forge a relationship with Osamu after you graduated high school and began deciding on living arrangements for university.
Honey, it’ll save us money. We don’t have the funds to pay for dorming at that private school, so you’ll either have to live with Samu or go to community college.
You’d tried every excuse: pleading with your parents, trying to take out a bigger loan with your bank, and even asking Atsumu if he’d be kind enough to lend you some money (he wasn’t). In the end, you sucked it up and moved in.
But honestly, things were now a lot better than you’d expected them to be. You had dreaded becoming roommates with someone who was basically a stranger to you, but now that you were both older, and it was just the two of you, Samu actually treated you like a little sister. Maybe it was due to how much he had matured since graduation, or how he’d finally found time away from Atsumu to focus on his own goals.
In your last two years of living with Samu, you’d stopped thinking of them as a joined pair at the hip. Part of it was because you only saw Atsumu when he stayed over for home games or during the off-season whereas Samu was a regular part of your daily life.
In some ways it was nice. Samu kept himself and his apartment clean, and you liked being able to make your own espresso before class instead of spending money on coffee everyday. He was nice to chill with on your weekends or days off, he had a big TV to watch movies on together, and between the leftovers he brought home and the recipes he would test, you never went hungry.
There was a reason you preferred his company to his twin’s. Aside from the perks of living with Samu, the times that Atsumu stayed over proved that he was just easier to get along with. Every time Atsumu bummed off Samu’s couch for a week, you tried to be friendly, but would end up counting down the days to him leaving by the second day.
He made you uncomfortable, always bragging about his escapades with the women abroad and too pushy about your own dating history. He didn’t need to know about the boys you took home, or worse, tease you about how awful in bed and sporadic they were. Samu definitely knew about your occasional boyfriends, but you liked that he was respectful about it. He never brought up how quickly the noises coming from your bedroom would stop, or how your guests would all be gone by morning and never return.
You knew that he could hear it all, because the reverse was true when he had girls stay over. The walls in the apartment were thin and you would always hear the way the girls he brought home moaned while his skin slapped against theirs. It made your stomach twist to hear not just the moans of all those girls, but Samu’s own deep groan as he’d finish.
You chalked it up to jealousy about how he was luckier than you, and that those girls seemed to enjoy their time with your brother more than you enjoyed any of your suitors. But that didn’t explain how much you hated the way he’d avoid your gaze the morning after. Each time you happened to pass him in the hallway, he’d avert his eyes as if you were just a stranger in his apartment when he was with other girls. It made you look forward to the moment he’d kick them out, and you’d resume your rightful place as the only girl he doted on.
Thankfully, this Friday was supposed to be one of those nights. You were ready to go home and plop down on the couch, exhausted after finishing up a week of exams. Samu had texted earlier about a new movie he wanted to watch with you, and the promise of whatever you wanted to eat for dinner as a reward for acing your tests.
But your evening of relaxation would have to wait. As you stepped through the doorway, Samu’s voice was harsher than usual as he greeted you.
“Hey dumbass, what is this?”
A baggie dangled from his clenched fist, the incriminating clumps of weed sitting inside the rumpled plastic. You felt your cheeks heat as you tried to come up with a lie, but you knew it was no use. He’d barely waited for you to take your shoes off before bombarding you with questions.
While you ordinarily got along great with Samu, his overprotectiveness made it impossible to have a normal college experience.
“W-where’d you even find that?! Stop digging through my shit!” Your voice came out higher pitched than usual as you used your defensiveness to stall for time, still scrambling for an excuse.
“I needed cash, and I thought you might have some. But quit dodging the question. Why do you have this?”
“Samu, relax. I’m a college student, everyone tries drugs. It’s not like I’m an addict or anything.”
“I didn’t say you were. I honestly don’t really care, except if you’re gonna do drugs, you should be staying safe. How do you know it’s not laced or something?”
You sputtered silently while you tried to come up with an excuse, knowing full well that there was no way to trust the source of that marijuana. Your dealer was a guy you had a class with two semesters ago, who you only contacted because the cousin of a friend of a friend knew him, and truthfully, the first and only time you’d smoked, it had given you a migraine that lasted two days and you were scared to try it again.
“Exactly.” Samu walked out of the foyer and into the kitchen, where the trash can lid banged shut with a metallic clang as the baggie thudded against the bottom of the can. He turned to the fridge afterwards, and you wrung your hands anxiously while he remained turned away from you. The last thing you wanted was for him to be upset with you, because those fights lasted too long and were even more tense than running into Samu’s one-night-stand every so often.
But as he turned around, a small metal container clinking against the marble counters while he set it down, his face showed no evidence of anger. In fact, he smiled as he lifted the lid off the container, before looking up to see your shocked reaction as you took in the sight of the yellow-greenish cannabutter.
“What the fuck, Samu?! How are you gonna yell at me for smoking when you do the same fucking shit?! You’re such a hypocrite!”
You would’ve stormed off to your room if he hadn’t grabbed your wrist forcefully, stopping you before you could slam your door shut.
“First of all, dipshit, it’s not the same as smoking. I know my shit is good, and I just like cooking with it for myself. I didn’t know you were into drugs, but now that I know you do, I can try out some new recipes on you, get your feedback and all that, if you’re okay with it.”
He pulled you close to him, your face pressing against his chest, still muscular but now covered with a squishy layer of fat that was comforting to press your face into and just inhale.
“Hey,” his voice came out gentle. “I’m just lookin’ out for my baby sister, ya’know? I’ll make some pot brownies and we can chill out and do whatever you want. I’m sorry for digging through your stuff.”
You couldn’t stay mad at Samu while you were pressed against him, the smokiness and musk of his cologne flooding your nostrils as he spoke in a whisper only audible to the two of you. When he finally pulled away, it felt like your hug hadn’t lasted long enough, though it was enough to leave you flustered.
While Samu busied himself with mixing the ingredients for his pot brownies, you ran to the bathroom to cool your face off with splashes of water. After the batter was put into the oven to bake, Samu joined you on the couch where the chocolatey smell wafted through the air as you sat through the first half of Spirited Away.
Your stomach rumbled as you watched Chihiro’s parents stuff their faces with food, realizing that you were eager to try the brownies. Your mouth watered at the thought of the warm, still fudgy interior melting in your mouth; everything Samu ever cooked was delicious, so it was natural to assume that his brownies would be too.
Before long, the timer beeped to signal that they were done baking. You waited impatiently as they cooled, and after ten minutes, Samu finally gave in to your incessant whining.
“Careful, it’s hot.” He slid you a small square on a plate, and you scrutinized the piece before you, comparing it to the bigger chunk he’d cut for himself.
“Samu, cut me some more. Yours is so much bigger!”
“You sure? It’s your first time and it might be kinda strong.”
“Sometimes,” you huffed, taking the knife from his hand and cutting a square equal in size to his, “you have to stop thinking of me as your little sister and just let me do what I want.”
Before he could protest, you were shoving the morsel into your mouth, and he had no choice but to shrug it off and mirror your actions. It was just as delicious as you’d imagined, and you resumed your place on the couch feeling satiated after finishing the brownie.
Unfortunately, it was also as strong as Samu had imagined and intended it’d be. The high this time was different; it came over you slowly and you didn’t realize how badly you were faded until you tried to recall the events of the first half of the movie and your brain felt like it’d been steeping in molasses.
You clicked your tongue, suddenly realizing your mouth had gone dry. Getting up to get a glass of water felt like the world’s hardest task as you stood up, your legs wobbly and lagging.
Samu chuckled at your slow shuffle to the kitchen before getting up to help you. “You alright? I told you they were strong, but you didn’t wanna listen, huh? That’s what you get.”
As much as you wanted to wipe the smirk off his face, your heart softened as he ruffled your hair on his way to the sink. “Go lay down, I’ll bring you water.”
You did as you were told, making your way to his bedroom since it was closer. Collapsing upon the plush king-size, it took the rest of your remaining strength to crawl beneath the covers and nuzzle into his pillow. His sheets were soft and cooled your skin, and as you buried your face in his comforter, his familiar scent grounded your foggy mind.
A few minutes later, the padding of his feet against the floor grew louder as he approached. “Hey, what’re you doin in here?”
He sounded shocked to see you curled up in his bed, but not displeased. As he set the glass of water down on the bedside table and took a seat on the bed next to you, you watched the surface of the water level out.
“‘S closer than my bed,” you mumbled.
“Okay, you can stay as long as you want. Here, drink the water.”
You reached for the glass, but a chill crawled up your spine at that exact moment, causing your arm to jerk suddenly. The water splashed out of the glass and all over Samu’s body, soaking the hem of his white-tshirt and his joggers.
“Shit, sorry Samu. Accident, my hand slipped.”
“Nah don’t worry, you’re good. I’ll get you another glass.”
He took the glass from your hand, only returning when it was refilled. You sipped thirstily, this time the cool liquid making it to your parched mouth. But as you drank, you nearly spit out your water at the sight of Samu undressing in front of you.
It wasn’t the first time you’d seen him naked, but this was the first time you were looking. The wet fabric had highlighted the contour of his stomach, strangely more muscular in the flesh than it felt every time you hugged him. His boxer briefs didn’t leave much to the imagination, the curves of his quads visible beneath the short hems. You watched as his soft cock bounced while he shook off his joggers, your eyes widening as it began to grow and strain the front of the fabric.
And when you looked up at Samu’s face, he was staring at you just as intensely as you were staring at him.
“What are you looking at?” Even with his soft tone, his words sounded menacing, and your heart began to race as he walked closer to where you were sitting on the bed.
“N-nothing.” All that water had been for nothing with how dry your mouth had suddenly become again.
“Really? You really think your big bro doesn’t know you well enough to know how you look when you lie?”
He grabbed your wrist, stopping you from scrambling away as he mounted your body on the bed, his cock even harder than before.
“Tell me you’re not thinking about how good I could make you feel right now.”
God, your throat was so dry. “I-I’m not.”
“Liar.”
“You don’t know that.”
“Yes I do.”
His face had come startlingly close to yours, and before you could protest, your words were swallowed by his lips pressing against yours.
Samu was right; you were lying. Something about his lips was addicting, and you found that just one taste wasn’t enough. As he pulled away, a knowing smirk flashed across his face at the whine that left your lips.
“See. I knew you were lying. If you don’t want me, you should try harder to resist.”
He chuckled at how pathetic you looked, thighs wrapping around him while you resisted the urge to beg. It stroked his ego to know that he was correct though, and years of dealing with Atsumu had given him an unbelievable amount of patience. He cocked an eyebrow, wordlessly letting you know that he wouldn’t relent unless you did first.
“Samu… please.”
He clicked his tongue with disapproval, leaning in close to taunt you. “Please what? And that’s Samu-nii to you.”
You swallowed thickly, the dryness of your mouth reminding you how potent Samu’s edible had been. The realization that Samu was the one who had kissed you, and that he was currently spreading your legs apart right now, his leaking cock mere inches from your own crotch dawned upon your hazy mind. He wanted this as much as you did, even if he wouldn’t admit it first. For him, you could beg.
“Please, Samu-nii, help me feel good.”
He smiled affectionately at you, satisfied with your plea. “Anything for such a cute little sister.”
He wasted no time kissing you again, this time rougher than the last. He kissed with hunger, his mouth as sloppy as his fingers as they clawed over your body to strip your clothes off. He’d taken his time with your sweatpants and your shirt, but your panties ended up ripped into pieces, the fabric strewn across the floor.
With both of your minds clouded by the pot brownies, you focused on nothing but how right it felt. Gone were the thoughts that this was wrong, that this was your brother.
If it was so wrong, why did Samu-nii know your body better than every other boy who’d ever fallen into bed with you? Why were you already wet when he pushed a finger against your folds, and why did you beg for more?
His teeth grazed against your neck as his fingers pressed into your cunt, the digits thicker and longer than you were used to. A sense of pride bloomed in his chest at the way you squeezed around him, while you gasped at the feeling of blood rushing to where his teeth scraped you.
You shivered against his touch, every sensation heightened because of the THC flowing through your bloodstream. Perhaps it was the drugs, but it was more likely that it was Samu’s skillful touch that had you careening towards your first climax quickly. Your vision blacked out momentarily as you spasmed; the only thing you could feel were his fingers firmly curled against your g-spot.
“Shit, you came so hard. So wet and I barely touched you. You’re dripping all over my fingers, gonna feel so good when I slip my cock in ya.”
“N-no.”
“What do ya mean, no?”
“Another one. Do that again, Samu-nii.”
His heart swelled at the title; there was no way he could refuse such a simple request from his little sister, the one person your parents had instructed him to look after when you first moved in with him two years ago.
“Fine, but I get to taste too, okay?”
Without waiting for your response, he dipped his head between your thighs, tongue cautiously flicking against your clit while he added a third finger to the two already inside you. The foreign feeling made you shiver, but the way he sucked at your clit had you subconsciously pressing your thighs against the side of his head while your fingers tangled into his locks.
Samu didn’t mind being sandwiched between your thighs, his free hand coming up to grip your flesh tightly. But your focus was on the euphoria of his mouth against your core, and with his head trapped between your legs and hands, he stopped moving as you bucked your hips up to ride his tongue.
His breath came out hot against you as he chuckled, adoring how eagerly you chased your own climax, smearing your cum all over his face as you used him to get off. But just as your cunt began to clench around his fingers, his hand on your thigh pried them apart and he withdrew fully, leaving you to whine about the ruined orgasm.
“Samu-nii…. I wanna cum, please. You promised!”
“Hey, listen to your nii-chan.” You squealed as he landed a firm smack against your cunt for speaking out of turn.
“I changed my mind, but don’t worry. Wanna feel you cum on my cock, okay?” As he removed his boxers, you were left to gape at his dick, now fully erect and girthier than it’d looked in his underwear. After wiping his fingers and face on the fabric, he tossed it aside, before lining up his cock with your entrance.
As the tip pushed into you, he paused while you writhed beneath him; even three of his thick fingers couldn’t have prepared you for how well-endowed he was. He took the time to lean in close to your face, licking the shell of your ear as he whispered, “I’ll help you cum, okay? Nii-chan knows best.”
Ever the caring big-brother, always attuned to what you wanted and needed, he was gentler with the way he pushed the rest into you. The only time his focus shifted was when his phone began to ring, but he quickly silenced it and returned right back to wipe a tear from the corner of your eyes and shush your sniffles.
“Samu-nii, who was that?”
“Shh, don’t worry about that. Just focus on me. Takin’ me so well, huh?” The lewd squelching noises of his skin sliding against yours filled the room and after a few beats, he spoke again.
“Look, look, don’t cry. You took all of me, okay? Good job.”
He caressed your face with his palm, his palms worn and rough but still comforting as he waited patiently for you to stop sniffling. His face was so close that his breath tickled your neck as he muttered, “Take your time, just let me know when you’re okay.” But you found the closeness comforting, and the pain subsided once you distracted yourself with the way his chest heaved as it was pressed right up against yours.
“Samu-nii… fuck me, please. I’m ready.”
With a soft peck to your lips, he began to rock his hips into yours. You noticed instantly that the way he moved was different from everyone else you’d been with before. For starters, his eyes were trained on yours as he moved, observing to see not only that you were free of pain but that you were enjoying it as much as he was.
“That feel okay?”
“Yes, Samu-nii. You can… g-go harder.” He barely waited for you to choke out the last word before prying your legs apart to fuck you even deeper than before. You cried out at how full you felt with each of his thrusts. Samu was enjoying it too, evidenced by the soft string of curses he muttered under his breath. Between your own wails of pleasure, you could make out the phrases fuck, you’re so wet and feels so good.
But being the tease he was, he had the self control to hold off his pleasure if it meant getting to hear the way you begged for him. Just as the tension in your stomach fluttered, just as you began to squeeze around him, he’d pull out, letting you whine about wanting to come. A sadistic smile spread across his face as he slapped the head of his cock against your aching clit, snickering at how you jolted at the friction.
“P-please, Samu-nii.”
“Yeah? I wanna hear you beg.”
“F-fu…”
“What was that? Louder.”
It was hard to compose your thoughts enough to plead as he slicked his cock up and down your cunt, the drag of the tip against your clit so pleasurable it was distracting. But the need to have him fell you up trumped the daze you were in, and you managed to utter out, “Fuck me, please Samu-nii. Want you to cum in me, make me yours.”
You didn’t know where these thoughts came from, but as they slipped out innocently, you realized there was no lie behind your words. Perhaps it was the vague memory of how jealous you’d felt towards all the girls he’d brought over coupled with how easy the marijuana made it to succumb.
Good thing Samu was just as faded and happy to oblige. You felt his cock twitch as he processed what you’d said before he was slipping back into you once again. He bottomed out with a groan, this time not pausing since you were practically dripping down his balls.
“Fuck, you’re still so tight. You like that though huh?”
“Yeah, Samu-nii. F-fuck, you’re big…”
“C’mon, be a good girl. I know you can take it.”
He didn’t give you much of a choice though, with how aggressively he had your legs pinned back, slamming his hips into yours unrelentlessly. But after all of the teasing, any sort of contact between his skin and yours was relief. The way his cock bumped against your g-spot with each thrust had you arching against his touch.
And if that wasn’t enough, Samu-nii was determined to out-compete every man you’d ever been with and ruin you for every man to come. He had a way with your body, knowing how to touch you to elicit the loudest moans from you. His teeth scraped against your neck while his hand snuck down to toy with your clit as he continued to fuck you.
With Samu against you, on top of you, and inside you, he was the only thing you sensed. His groans were low and guttural in your ears, the smell of his musk and sweat mixing in your nostrils, the broad planes of his back rippled with muscle as your fingers scratched against him.
And you were all he could sense as well: the way you cried out each time his dick pressed against your cervix, noises of pleasure and pain mingled together. The squeeze of your cunt around him as you neared your climax coupled with the way you so sweetly asked, “Samu-nii, can we cum together?” had his own blood surging.
It took all of his remaining mental fortitude to reply, “Anything for my baby sister.”
He pressed against your clit even harder, drawing out a high-pitched moan as you finally tipped over the edge he’d had you dangling upon so precariously. Your first orgasm high and at the hands of someone other than yourself seemed to last forever; you were still riding out the high as Samu-nii got in his last few strokes before finishing too, the warmth of his cum flooding your womb as he groaned in your ear.
Your body still felt electrified as he pulled out, the mixture of fluids staining the bedsheets and dripping down your thighs. Finally, you understood how all those girls he had over felt, and better yet, you’d be the only one he wouldn’t kick out in the morning.
You rolled over to lay on his chest, the thump of his heartbeat slowly returning to normal calming you as well. It felt as natural as ever to lay beside him, and perhaps even better, now that all the tension that had been festering over the last year was out of the way.
While you rested your eyes, Samu reached over to the nightstand to grab his phone. Still dazed, you didn’t flinch at the noise of a facetime call ending. The room was silent save for the sound of your breathing and the whoosh of text messages sending as Samu updated his twin.
Samu: hope you heard all of that. it looks like i won our bet. told you i’d get to fuck her first.
Basking in the afterglow of debauching his little sister and beating his twin at their secret competition of who’d be able to first, he silenced his phone and set it back down. Tsumu could be dealt with later; for now, he was content to just lay down and hold his sister close.
samu-nii best niichan, say it with me now! he cooks, he cleans, he dotes, and he fucks. samu-nii supremacy let’s goOOOOOO
