#he's so stupid i wanna kiss him so bad | Explore Tumblr posts and blogs

nariism · 1 year ago

Text

my brother's best friend

pair. miya osamu x gn!reader

content: fluff, attempts at humour, miya atsumu is a little shit, first loves, mutual pining

synopsis. miya osamu takes pride in the fact that he’s the smarter of the twins. he, in fact, is not (especially when it comes to you).

wc. 3.1k

a/n: om nom nom nom nom brother's best friend trope nom nom nom... ok i have to come clean about this fic i literally wrote the first draft for this in 2021 on WATTPAD and it's been sitting dormant forever up until recently. enjoy 🫶

‎oh my god, how did i end up here?

it’s the only thought repeating over and over again in osamu’s head as he sits there staring at you. you’re too preoccupied with the menu in your hands to notice his unwavering gaze, scanning through it and muttering to yourself indecisively about what to order.

of course, the question of how he ended up here on a date with you could be summarized in one simple sentence:

miya atsumu is the world’s biggest idiot.

if kita or aran were here they would surely be poking fun at him right now, lecturing him about how his dna is a perfect carbon copy of atsumu’s. and while they would be right, osamu is convinced his brother has at least 70% less brain cell capacity.

the thought makes him feel a little smug. (he’s in the class under atsumu.)

you were friends. at least as far as how often you saw each other, he considered you good friends. maybe. not that he knew all that much about you other than the fact that you were constantly... around. if he didn’t know that atsumu was the biggest knucklehead on planet earth, he would have assumed you were dating. but he knew his brother was too invested in volleyball to be seeing anyone seriously, and you didn’t didn’t seem like the type to mess around with guys like him anyways.

you were way too level-headed for that despite the raunchy, head-turning jokes you liked to tell, which honestly might be the reason why atsumu keeps you around.

whenever you came to their house, you would stick to lounging in atsumu’s room or the living room. you typically avoided disturbing osamu and the rest of their family — not like they minded having you around. no, in fact, their mother had a strange soft spot for you. you were quiet and well mannered, until it was just the three of you and suddenly an onslaught of fierce attacks on poor atsumu would commence.

for the majority of your friendship, you have stayed out of his way and he stays out of yours. you only talk to each other when deemed necessary, like when walking home from school or when you shyly greet him at the door because atsumu is on the toilet. he does, however, rejoice in the fact that there is another person on the atsumu hate train, and appreciates that you’re at least colourful with your insults. it’s impressive, really.

(he would never admit it. never. never ever. but it warms his heart a little that there’s someone out there just like him, expressing their love for miya atsumu in less conventional ways.)

you were quick witted and funny. a free source of entertainment when he would grow bored of his brother’s shenanigans. and it was a two way street, because when you needed a break from atsumu, osamu was always right there.

you were noticeably gentler with the younger of the miya twins: asking him how school was, and if he needed help with his chemistry homework, and what he had for lunch. menial little things, but sometimes he found himself thinking that it was the highlight of his day.

otherwise, your presence in his life is, as osamu considers it, indifferent.

sure, he likes to look at you. and sometimes, maybe, he wishes you and atsumu would invite him around more often. it also doesn’t help his heart when you’re so nice to him, like when you’re all having dinner together and you pretend you don’t want the last dumpling on your plate and shovel it onto his. he likes that. or when you invite yourself into their freezer for ice cream, you always make sure to grab an extra one for him. there have been multiple occasions in which you’ve wordlessly slid him your notes to copy, too.

you were good at that; knowing what others wanted and being more selfless than the average person. you’re a people pleaser, and though he and atsumu used to make fun of your type when they were kids, your charm is undeniable.

unfortunately, actually making any sort of move on you is out of the question. not only would it potentially complicate things between you and him, it would also risk putting a strain on your friendship with atsumu. making his brother’s life a living hell is what miya osamu was born into this world to do, but for some reason his stomach turns at the thought of ruining your friendship.

you were just atsumu’s cute best friend. nothing less, nothing more. and he would very much like to beat the “i fell in love with my brother’s best friend” allegations, thank you.

he realizes he’s still looking at you intently with his arms crossed over his chest. he watches as your nose scrunches a little in thought, trying to decide between their two best sellers. he sighs in relief when you get up to order for yourself, tucking a stray hair under his cap before going back to sulking with his thoughts.

atsumu had a lot of bad ideas. so many that if they sat down and listed them all out they might be there for a couple days. but this? this is his worst one yet. and how osamu managed to get roped (bribed) into this, he will never know. but here he is, and here you are, and here atsumu is not.

he really should get better at saying no to atsumu.

(“c’mon, ‘samu! please? for me?!”

“what the hell? no. that’s a shitty thing to do. just tell them ya can’t go.”

“but it’s their birthday! they were lookin’ forward to this. they’ll hate me forever if i bailed!”

“and? why would i help you? ‘specially with somethin’ so stupid. it’s your fault you didn’t plan better.”

“don’t be like that, y’know it was a last minute thing!”

a beat of silence.

“pretty please? it’s their birthday… you guys are friends too, right?”

osamu can’t believe he’s entertaining this stupid idea for even a second. you’re not an idiot. you’d know it’s him with a single glance.

“this is an all time low, even for you. they’ll notice it’s me right away. are ya crazy, ‘tsumu? hit your head or somethin’?”

“it’s just this one time! i’ll never ask ya for anythin’ ever again. never ever ever ever, i swear it.”

“...’tsumu…”

“don’t sound so tired with me! do this for your big brother. have i mentioned it’s their birthday?”

big brother? osamu scoffs loudly.

“you actually mentioned it three times. and yer only a couple minutes older than me. but... fine.”

“don’t be such a jacka- wait, what?”

“i said fine. but you owe me lunch for the next two weeks.”

“deal!”

“... are ya sure they won’t know it’s me? i mean, i really think you should reconsider-”

“oh shut up, ‘samu, we’re identical!”

“just know that i won’t hesitate to throw ya under the bus if shit hits the fan.”)

what a terrible plan. pretending to be atsumu was proving to be harder than he initially anticipated. he would have thought that spending every agonizing, waking, living hour with his brother would have trained him well enough, but atsumu is so no-chill that it’s somehow making this already horrible idea even worse with every passing second.

surprisingly, you haven’t said anything. you haven’t acknowledged the massive elephant in the room. this could only mean one of three things:

1. you’ve noticed, but you’re desperately trying to spare atsumu’s feelings and osamu’s embarrassment by not bringing it up.

2. you’re dumber than he thought. dumber than a rock, actually, if you didn’t take one look at osamu and know it was him.

3. you are a cruel, wicked, evil, deranged human being who finds osamu’s situation entirely hilarious and wants this to go on for as long as possible.

judging by your casual banter, he’s willing to bet it’s either option one or two. you’re twirling a lanyard around your finger when you finally return with your drink of choice in tow. next destination: the local aquarium. atsumu put a surprising amount of effort into planning the day.

it’s a shame he hadn’t accounted for planning himself into it.

‎he shouldn’t have agreed to come here.

spending time alone with you like this was bound to stir up feelings he’d long ago buried in the hollows of his heart. of the miya twins, osamu was always better at keeping his emotions under wraps. there were rare occasions in which he lost his cool, in which he was actually somehow worse than atsumu, but in general he was as level-headed as you were.

you’re ruining him and his plans to never acknowledge his feelings for you.

it’s unfair, really, how his heart seemingly gets lodged in his throat when you cling to his arm so tightly, laughing and pointing out all the funny-looking fish. and when you point at something called a vampire squid, raving about how long it took you to find one in animal crossing, he nearly crumbles to his knees and puts his head in his hands.

(in other words, he’s totally whipped. he’s not beating those allegations.)

osamu thought he could get used to looking at anyone’s face. he always found people boring — he grew up being the other half of his brother, after all. the miya twins are many things, but boring is not one of them, and to entertain them you have to be someone with a special brand of humour.

but now, as he looks at you with the soft blue glow from the tank shining against your face, he can’t help the thought that crosses his mind:

i could never get tired of this.

“... hailing from the depths of tropical and subtropical waters, the vampire squid feeds on marine snow.”

he blinks back into reality, eyes drifting from you to the sea creature you’re admiring, then back to you. “marine snow? sounds gross.”

“it’s the debris that falls to the lower levels of the ocean. lots of deep sea creatures feed that way since it saves them the energy of needing to go hunt.”

osamu seems skeptical. “they really just eat anythin’ like that?”

your head turns to look at him. there’s a little smile playing on your face, like you seem amused by what he just said. “sounds like someone i know.”

he makes a strange expression in response. were you talking about him? did you often bring him up when you were alone with atsumu? the soft and fond look in your eyes doesn’t help his racing heart. the idea that you and atsumu talk about him in private so sweetly makes his face burn slightly in embarrassment.

he shakes his head to get the thought out of his brain before stuffing his hands into his pockets.

your arm finds his again, locking together. it’s an oddly intimate action, even if you think he really is atsumu. he doesn’t know you to be the most touchy person on earth, though he supposes he can’t see what you’re like behind the closed doors of his brother’s bedroom. his blood boils for some reason.

you stop at the next tank, the one situated in the centre of the room filled high with kelp and schools of tiny fish. you’re looking at them with wide eyes, light shimmering in them. he could cry right now. you look like an angel bathed in the shadows of dancing fish as your gaze carefully follows a school circling around the top of the aquarium.

there’s a feeling swimming inside of him, unfamiliar and oh so dreadful. he can feel it in raging in every part of him — in his heart, in the fiery pits of his stomach, in his throat — and he knows exactly which word comes to mind.

miya osamu may be in the lowest class in his year, and he might share a single brain cell with his brother, but he’s read enough books to describe this feeling. he’s listened to enough love songs to know this ache in him.

if you asked him ten years from now, he’d tell you exactly the same thing as he would right now; that your first love is always petrifying.

“pretty, aren’t they?”

“yeah. real pretty.”

but he hasn’t looked at them even once. how could he when there’s a living, breathing angel standing next to him?

‎osamu delivers you to your doorstep that night.

it feels like a dream, the whole day and having the privilege of holding your hand and feeling your body against his.

maybe it was just the greedy monster in him speaking. the laws of the universe dictate that if it’s you and osamu, atsumu needs to be there, too. the miya twins have always come in a package. a duo. there is no just atsumu or just osamu, at least there wasn’t until you came along.

suddenly it was you and atsumu. it was atsumu and osamu, and you. but there was never just you and osamu. it didn’t work that way.

well, screw the universe and its laws. osamu never believed in that astrology shit anyways.

he’s fully prepared to keep this day an untarnished memory — something to cherish when life goes back to normal and he’s unable to stand shoulder to shoulder like this with you again.

when you lean in to kiss him, there is only one thought repeating in his mind like a mantra:

it’s just once. just one day. one last perfect memory.

you’re so close that he can feel your breath filling his lungs. his heart hammers where it rests in his chest, so loud that he can hear it thundering in his ears. it’s then that he realizes this is wrong. all of it is wrong.

he recoils back with lightning speed, and his heart aches at the sight of your disappointed and puzzled expression. but it’s not fair to you, and it’s not fair to atsumu either.

he cares about both of you too much to be selfish right now.

how could he possibly risk hurting two of the people he cared most about in the world? he couldn’t be that self-centred, to be able to steal a kiss from you just to keep his memories of this day perfect.

perfect doesn’t exist if none of it is real.

“i’m not… i’m not who you think i am.”

he slides the hat off his head with shame burning in his cheeks, avoiding your eyes like a child who got caught with his hand in a cookie jar. it was time for him to be honest, both with you and himself.

“look, yer really cool. and i– crap, it’s complicated, ‘kay? i might like you. like– like you, like you. i wasn’t thinkin’ straight. 'm really sorry, i know it was wrong to string you along, i was just havin’ so much fun today that–”

his mouth suddenly comes to a halt as you reach forward and capture his cheeks between your fingers, squishing them together so he’ll stop rambling.

you look at him with a confused but amused smile. “um, ‘samu? i like you, too.”

“what?” he sputters out as much as he can with his face still held in place. his brows furrow, but all rational thoughts have stopped flowing in his mind. he’s staring at you like a flabbergasted idiot, so you continue.

“why else would i agree to go on a date with you on my birthday?”

“but– i– huh?”

your head tilts. “this was a date, wasn’t it?”

it dawns on him then. it had never occurred to osamu that there was another explanation for your strange lack of acknowledgment that he is painfully easy to see through:

4. you like him and simply thought this was a date. you like him as much as he likes you, which is a stupid amount. after all, he likes you enough to go through with an infinite number of atsumu’s terrible ideas just to make you happy.

of course you weren’t that dense. of course he was found out the second you laid eyes on him. of course he had misread the entire situation because he was blinded by his brother’s boisterous claims that they were indistinguishable.

“this is ridiculous. i can’t believe you–… atsumu somehow always pulls through even when he doesn’t mean to.”

“what do you mean?”

“whadd’ya mean, what do i mean?”

“about atsumu?”

“oh, he was freakin’ out about missin’ today and wanted me to go through this whole thing pretendin' i’m him so ya wouldn’t be mad at him.”

“but he already told me he couldn’t make it today? you really didn’t have to do… all this,” you gesture to his whole body with a flick of your wrist.

at your words osamu finally crumbles to his knees in pure agony. he looks up to the sky, to whatever god has forsaken him by making atsumu his other half, and sighs with the weight of the world on his shoulders. he can just imagine the shit-eating grin his brother has right now.

“i’m…” he pauses, carefully selecting his next words, “going to smother him with a pillow.”

you blink at him for a moment before all the pieces fall into place.

all the times you’d gushed to atsumu about your massive crush on his twin and the way he’d complain to no end about neither of you making a move, forcing him to watch on with mild disgust as his best friend and brother made goo goo eyes at each other. all the times he would “forget” his shoes at the gym and need to run back to grab them, pushing you into small talk with osamu. all the times he would suffer through your teasing just to see the two of you walking side-by-side sharing proud little smiles.

atsumu’s resume looks something like this: world’s biggest idiot, volleyball player, third-wheel, and tired wingman.

you’ll have to thank him later.

“no wonder you’ve been acting so weird all day! i thought you were just one of those guys who gets nervous on first dates!” accompanied by this statement is a laugh that makes osamu weak.

he grumbles. “what’s so funny?”

“say what you want, but you’re as dumb as ‘tsumu.”

“no… please… don’t compare me to that nitwit… i might have a heart attack at this rate.”

you snicker quietly as you help osamu back onto his feet, eyes shimmering with joy as you let his confession sink in.

“you’re right, he is an idiot.”

“dumbass.”

“moron.”

“he’s gonna hate us even more from now on,” osamu smiles uncontrollably, inching closer to you again.

“yeah?” your lips brush against his daringly, “i can live with that.”