i've been thinking bout deku only dating blondes and katsuki being absolutely livid for days, can't focus on anything else
like, katsuki being slightly put off when deku and kaminari start dating, because kaminari just won't/shut up/ about how warm his hands are or how deku is surprisingly good at kissing. katsuki wonders if deku talks about kaminari like this with his friends, too.
after a month or so they break up, and katsuki is glad to have peace in his life again, but all too soon he overhears ochako and tsuyu gossiping about having seen deku kissing ojiro in an empty classroom and excuse him, but what the fuck?
at least kaminari has a personality, annoying as it is. katsuki barely remembers that tail-boy is in their class on a good day. what could deku /possibly/ see in him?
they don't even last a month, which makes katsuki feel weirdly smug, but then rumors start that deku is dating a girl from 1-b. katsuki didn't even realize deku /knew/ anyone from 1-b.

when he finally sees them together, he's enraged.
not because they're acting disgustingly lovey-dovey (how dare they sit so close???), but for a stupid reason that even he can recognize is irrational.

that big-eyed horsey bitch is blonde.

once is chance, twice is a coincidence, thrice is a pattern.
katsuki had only given the idea that deku might be specifically favoring blondes only a passing thought before ignoring it entirely, but now he can't. the evidence is right in front of him that deku is working his way through every blonde in their school...except him.
he hates the dark, ugly, lonely feeling in his chest when he finally admits to himself that he's jealous. but there's nothing he can do except watch as deku goes through yet another short relationship that leads to an utterly disastrous one when he takes a chance on monoma.
it barely lasts a week, and he's pretty sure it ended in a fistfight considering aizawa looks more exhausted than usual and deku has detention. katsuki's still incredibly annoyed at deku for lowering himself enough to date that copycat punk, but at least he's come to his senses.
then mirio togata shows up.
katsuki hates him instantly. his shitty jokes, his weirdo friends, his stupid face, his /fucking blond hair/. the way he won't stop clinging to deku even though he's a third-year, and the way deku inevitably ends up a blushing, stuttering mess by the end of their conversations.
he's stuck in a hell of his own making -- he can't just leave whenever mirio shows up, but staying means he's forced to stew in silence. the kicker is that he isn't even sure they're dating -- if anything, it looks like deku is pining after mirio.

somehow, that's worse.
katsuki does his best to simply ignore the whole situation (when it's not being shoved directly in his face), and he almost manages to convince himself he's not simultaneously surprised and devastated when the gossip mill does nothing but rave about u.a.'s newest couple.
it won't last, katsuki tells himself. deku's relationships never last. a few months, tops. maybe mirio will get sick of deku's exuberance about heroes (unlikely). maybe deku will grow tired of mirio's bad jokes (also unlikely, he cracks plenty of his own).
maybe katsuki won't drive himself insane over this whole situation (the most unlikely scenario of all).
perhaps that's why, one day after school when katsuki is trying (and failing) to teach deku how to make a proper katsudon, he decides to open his big, fat, stupid mouth.

"this one's lasting longer than the others, huh?"

deku blinks. "what?"
"you and that beady-eyed fucker," katsuki mumbles, feeling suddenly foolish.

"oh...o-oh, yeah, i guess? why do you ask?"

katsuki shrugs. "considering how your last relationship went, are you really gonna blame me for being surprised?"
deku frowns and wrinkles his nose. "don't remind me," he mumbles. "that was the worst decision i ever made."

despite himself, katsuki chuckles. "what the fuck even happened? must have been pretty bad for aizawa to lay down the law."
deku turns red and busies himself getting something out of the fridge. "i don't wanna talk about it," he says.

"wow, even the problem child doesn't wanna talk about it? that's /bad/," katsuki says with a smirk. deku peeks over the door of the fridge and glares.
"is that why you went for the goody-two-shoes golden boy? wanted a complete change from the asshole to end all assholes?" katsuki continues, surprised at how bitter he suddenly sounds.

"that's none of your business, kacchan," deku says firmly.
"isn't it?" katsuki snaps back.

"wha-- what's that supposed to mean?" deku asks.

katsuki growls and turns to stare daggers at the rice cooker, fists clenched at his sides. he's making an unbelievable ass of himself, isn't he?

"kacchan?"
"forget it. just pass me some bowls."

"ka--"

"/deku/."

deku sighs and does as he's told.

it's the quietest meal katsuki's ever had with him.
the silence is unnerving, and by the time deku finishes his food and washes the dishes, katsuki is still only half-done.

"thanks, kacchan," deku says softly. he rushes out of the kitchen without even waiting for a response -- not that he'd have gotten one, anyway.
katsuki stares down at his half-eaten bowl of katsudon and shoves it away angrily, burying his head in his hands and pulling his hair so hard it hurts.

fuck, he's an idiot.
(stopping here for now! thanks so much to everyone enjoying this thread -- i really didn't mean for it to be this long, let alone need continuations lmao)

(if you like my writing please feel free to drop me a tip! ^^ https://ko-fi.com/saekimchi )
(slowly continuing, let's gooooooo)
katsuki apologizes two days later.

what else can he do? he tells deku half the truth -- that he'd been in a bad mood, out of whack, distracted. that he shouldn't have run his mouth, and he'll try not to do it again.

and deku, damn him to hell, smiles and forgives him.
it doesn't sit well with him, despite his initial relief. he's still restless and irritable over the whole situation, and he doesn't quite know how to resolve it. it's not like he can talk to anyone else about it, and he obviously can't keep his cool with deku.
so after some thought and a lot of half-hearted reassurance that yes, this is a good idea, he arranges to meet mirio after school.
"you must be kacchan!" mirio says loudly, bounding up to katsuki with a smile.

katsuki grits his teeth. "bakugou katsuki," he snarls.

"nice to finally meetcha! you're just like izuku described," mirio says blithely, either ignoring or oblivious to katsuki's annoyance.
"so, what's all this then? should i be worried about this meeting?" mirio asks.

katsuki stuffs his hands in his pockets and scowls. "you're not stringing deku along, are you?"

mirio blinks in surprise. "why would i do that?"
"why the fuck would anyone do that? are you or aren't you?"

"no, of course not. i like izuku very much." mirio beams and katsuki's stomach flips. "i was surprised when he asked me on a date, but i can't say i regret accepting. i think we suit each other, don't you?"
"no," katsuki says bluntly.

mirio just laughs, a deep laugh right from the belly. "you're a funny guy, bakugou katsuki! i can see why izuku's kept you around all this time."

"i'm not a fucking pet," katsuki snaps. mirio holds his hands up in surrender.
"wrong choice of words, my bad. i just meant you're important to him, that's all. but you knew that already, didn't you?"

sure, he knows it -- some days, that knowledge is his greatest treasure. other times, it makes him miserable. "i guess," katsuki mumbles uncomfortably.
"it's nice that you're worried about your friend, but do i really seem that untrustworthy?" mirio asks.

"deku has shit taste."

another chuckle. "i see! i'm sure you'll forgive me if i don't entirely agree, though."

"boy, you're fuckin' full of yourself, aren't you?"
"i wouldn't say that. more like...well, me 'n izuku, we're sunflowers, you know?"

katsuki wrinkles his nose. "what the fuck are you talking about?"

"sunflowers! when they can't see the sun, they look at each other instead. isn't that cool?" mirio says with a grin.
"what does that-- don't try to change the subject!" katsuki snaps. "i'm fucking warning you, okay? you try anything funny with deku, and i swear to god i'll--"

"blast me, explode me, kill me with your knees, right?" mirio interrupts, eyes sparkling with mirth.
"i know the drill. izuku's got me wrapped 'round his finger -- i'd tell you not to worry, but it doesn't seem like that's your style, eh?"

katsuki growls in response, willing away the urge to let an explosion loose in mirio's stupid face.
"if that's all you needed, i gotta get going. thanks for calling me out here, bakugou katsuki! i understand a lot more now," mirio says cheerfully.

"whaddya mean, you understand?! hey!" katsuki yells, but mirio is already walking away.
katsuki thinks this whole thing was a mistake, because now he's confused as well as angry. his only reassurance -- if he can really call it that -- is that mirio doesn't seem to have any ill intentions.

the way he says deku's name...there's genuine affection there.
it turns his stomach a little to think of it, even though logically he knows it's a good thing. it means deku won't get hurt. it means that for once, he made a good choice...

no, katsuki's not gonna think about that any further.
what he's going to do instead is go hit a punching bag until he can't lift his arms, take a long, hot bath, and go to sleep. he's going to ignore any and all mentions of deku's love life, and god willing, in a few weeks he won't have to think about mirio togata ever again.
of course, nothing is ever that easy.
he gets better at reigning in his temper -- the punching bags in the gym suffer for it, but it's an acceptable trade. he learns to tune out all the deku-centric gossip he seems cursed to overhear. he can even talk to deku normally, spend time with him.
but weeks turn into months, and those turn into more months, and even on his good days katsuki wonders when the fuck mirio togata will just /go away/.

that goddamned beady-eyed fucker should be focusing on his internship, on graduating, on his career and his /future/.
instead, he's mooning over deku, taking him on dates and inviting him to his dorm to hang out with the other third-years. if katsuki has to hear one more story about what mirio did or what mirio bought him or how cool mirio is, he's going to blast his own eardrums out.
it would be wise, then, for katsuki to simply stop hanging out with deku so much. less time with deku means less time hearing about mirio, right?

apparently, katsuki is not a wise man.
he finds himself joining deku on shopping trips, for quirk training, even movie nights with the rest of the dorm. he insists that deku join him in the kitchen once a week, because so help him god katsuki /is/ going to teach him how to cook something decent before they graduate.
katsuki doesn't understand where this sudden need to be around deku came from -- sure, they're childhood friends and rivals and all that, and being around each other comes as naturally as breathing despite katsuki's best efforts. but now it's different.
an itch under his skin, a buzzing in his skull -- being away from deku feels wrong somehow, as if he's missing out. as if he'll just disappear if katsuki doesn't look at him for long enough.
maybe it's just simple jealousy. maybe katsuki only wants to be around him so that -- at least for those moments -- mirio will no longer be the most important thing to deku.

it's silly and selfish and petty, but katsuki doesn't know any other way to be.
until the day deku tells him to get lost, though, he'll continue to stay by his side.
‐------------------------

the wedding is beautiful.

for every person katsuki knows, there's a dozen more he doesn't. unsurprising; deku and lemillion are among the most well-loved heroes of their generation.
sunlight streams through the tall, arched windows of the venue, and sunflowers decorate every surface as far as the eye can see. 

and katsuki can only stand there, dazed and numb, as mirio slips a gold ring on deku's finger.
katsuki blinks and it's like he's floating outside his own body, watching deku smile at mirio the way he used to smile at him. the sunlight in the room seems to brighten, washing out everything and everyone except the two grooms, and after an eternity, deku finally looks at him.
"kacchan," he says, but there's no warmth in his voice. his smile is bland, lifeless, the one he puts on for press and paparazzi. "thanks for coming. I guess this is goodbye, huh?"

he opens his mouth to reply, to protest, but deku has already turned away.
/no/, he wants to say, but the words stick in his throat. /no, don't--/

katsuki jolts awake, blinking in the late-night darkness of his room.
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