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"Why the fuck are you extras in here?!" Katsuki growls, brought up short as he comes back from his (third) cool shower of the day to fucking Pikachu and Tape Arms sprawled all over the other bed in his room - one that decidedly does not belong to them.
"Oh, it's for me, I think," Todoroki (his shitty roommate for this summer camp in actual hell) says, looking at Katsuki placidly with his stupid (pretty) dead fish eyes. "I'm helping them cool down."
Katsuki's pulse throbs in his temple as he watches Pikachu splay a hand over Todoroki's stomach, letting out a truly obscene moan of bliss.
Even from the doorway, Katsuki can feel how the air in the room is getting perceptibly cooler.
And it actually is a fucking relief in this rickety-ass cabin in the middle of nowhere with the fucking broken air-conditioning that will be fixed god-knows-when, during one of the hottest summers in recent history...
Katsuki fucking hates this.
"Oi, get the fuck out!" he yells, trying hard to contain the explosion threatening to blast out of him. With how much he's been sweating all day, it's bound to end up in an actual conflagration that burns the entire place down. And he'd very much like to not end their first hellish day at training camp by poking at Aizawa-sensei's threadbare patience and sanity.
"No fair man," Tape Arms whines, wrapping around Todoroki from behind in a bear hug and sighing blissfully. "How come you get to share a room with Roki while the rest of us mortals gotta suffer in the heat?"
"The fuck?" Katsuki blusters. "Go take it up with All Might, he's the one who made the room allotments! Now get out, I gotta sleep and I can't relax with you damn idiots here yapping."
"You could just switch with us, you know?" Pikachu says, with a glint in his eye that Katsuki mistrusts on a molecular level. "You could take one of our rooms, and we could take your bed here. We wouldn't be stingy about sharing Shouto if we had him for a roommate!"
"Mm-hmm," Tape Arms says, petting Todoroki's hair like he's some stray fluffy kitten or something.
Todoroki just sits there, letting himself be petted.
What. The. Fuck.
Katsuki takes a deep, calming breath, and falls into a ready fighting stance.
"I'm going to count down from three," he says in a barely-restrained growl that makes the two unwelcome morons stop feeling up Todoroki to peer at him in alarm instead. Fucking good. "I'm going to count from three, and if you idiots aren't out of this room by then, I'm not responsible for what happens next."
"Hey, you can't -!"
"Three," Katsuki says ominously.
"But -!" Despite their protests, Dunce Face and Soy Sauce Face have enough braincells to actually shoot to their feet though. Good. Katsuki grins, more a vicious baring of teeth than anything.
"Two," he says, palms crackling. He takes unholy satisfaction at the fear in their eyes. Kaminari and Sero flee towards the door.
"Kacchan, you monster!" Dunce Face screeches as he stumbles over the threshold.
"One," Katsuki finishes smugly, slamming the door shut after them.
"That wasn't very nice," Todoroki observes in a monotone after a beat of silence. His hair is still all tousled and messy from Sero ruffling his fingers through them, red and white strands mixing in odd places.
He's just - he just looks so -
Katsuki's temper spikes. "Shut the fuck up, Icyhot."
*
But, later, when Katsuki wakes up in the middle of the night, feeling pleasantly cool on comfortably warm sheets, there is no denying that the reason for his present idyllic situation is the gentle cooling breeze drifting from the pretty boy sleeping on the other side of the room.
So maybe he wasn't very nice earlier, denying access to this comfort to the rest of his classmates. But so sue him.
Todoroki Shouto belongs right here, dammit.
*
It is still the gray hour before daybreak when Katsuki is rudely awakened again, this time by familiar (annoying) voices that grate on his (permanently-frayed) nerves.
"Shouto-kun! You feel so nice right now - I - I mean! Not in a creepy way, hahaha, ha, just like - ! Like... I mean! Just, thanks so much for letting us barge in so early! I was overheating so much, I think I have blisters - !"
"You are so manly for helping us like this, Todoroki! After that hellishly hot night, god you feel so good, I could kiss you right now -!"
"I am happy to help," Todoroki says, before adding in a thoughtful voice: "And I don't know how I feel about you kissing me, Kirishima, but we could try it anyway if you like."
Katsuki abruptly goes from mildly groggy to wide awake in half-a-millisecond. He shoots up from his bed, palms already crackling.
"Oi, what the fuck?!"
Deku appears to be choking on air, but the nerd is nevertheless still draped all over Todoroki. Like, all over him. He is honest to god fucking spooning Todoroki on his bed, like they are the side-pairing in a corny teen romance or something! What the fuck.
Kiri, meanwhile, is kneeling by Todoroki's bed and is staring up at Katsuki with a deer-in-the-headlights expression. He has Todoroki's right hand held in both of his own, like he's a gallant hero in some B-grade fantasy drama trying to confess to a sleeping princess or something.
It is way too fucking early for this bullshit.
"Leave," Katsuki manages to hiss out through clenched teeth. "Now."
Deku and Kiri have slightly more braincells (combined) than Dunce Face and Tape Arms because they scramble away from Todoroki and book it towards the door immediately.
"Can you make me some ice later though?" Izuku calls from the threshold. Katsuki screams in wordless rage and slams the door on his face.
(If he takes grim satisfaction in the little yelp from Izuku for his toe that Katsuki stubbed in the process, well, he is fucking justified, alright.)
*
The thing is, Katsuki's (massive, embarrassing, unwanted like a painful zit on the fucking nose) romantic feelings for resident class dumbass Todoroki Shouto are not a secret.
Well, they are a secret in the sense that Katsuki has never explicitly said it to anyone, and Todoroki himself (being, as aforementioned, a fucking dumbass) is completely unaware of it. But everyone else knows, is what he's trying to say. There's no doubt in his mind that everyone else knows.
Because there is no other reasonable fucking explanation for how Eyebags has been smirking right at him during lunch for the past ten minutes while sitting in Todoroki's lap.
Katsuki demolishes another bowl of rice, glaring balefully at the purple-haired brainfucker who has one hand smugly wrapped around Shouto's right bicep.
"Wow, Todoroki, you really are a lifesaver," Eyebags says in an unnecessarily loud sing-song voice, snuggling up closer to Todoroki, looking at Katsuki out of the corner of his eyes like the pest he is. "I was about to pass out from the heat, whatever would I have done if you hadn't come to my rescue...?"
"Um, I'm sure someone would have fetched you some ice from the fridge?" Todoroki replies cluelessly, running an absent cooling hand up and down Shinsou's back. His eyebrows are slightly crinkled, and he looks so serious as he contemplates life, or his noodles, or whatever the fuck goes on in that insane brain.
Katsuki hates him. He hates him so much he wants to punch his cute little mouth with his own mouth, and suck on that annoyingly plump lower lip just a little maybe...
"Shinsou!" Raccoon Eyes screeches like a banshee, materializing behind Shouto from out of nowhere. "You've been hogging Todo all through lunch, let the rest of us have a chance too!"
"Yes, it's our turn now!" a pair of sleeves flutter in the air next to Ashido, the damn Invisible Extra probably. Of course Katsuki didn't see her materialize, but that's all on her, being transparent and shit. "We want to cuddle Todoroki too!"
Even though she's fucking invisible (as already established), Katsuki swears she and Raccoon Eyes both shoot devious looks at Katsuki right at that moment.
Despite himself, Katsuki snaps.
Literally, coz he just snapped one of his chopsticks.
"Oh god no," Katsuki hears Deku mutter beside him faintly but he barely notices through the ringing in his ears as he gets to his feet.
He has had it. This is the end of the fucking line.
"Oi, you goddamn extras!" he roars, sending a few last dregs of rice spattering over the table from his bowl. "Keep your filthy hands off him!"
"Why would we?" Shinsou says, draping himself even more obnoxiously against Todoroki's chest. "Todoroki doesn't mind."
"Because I goddamn say so!"
"And what gives you the right, huh?" Ashido retorts, now draping herself over Todoroki's back and hugging him from behind. Todoroki doesn't even pause in eating his noodles, chewing like a chipmunk as he peers vacantly at the unfolding chaos around him, even while sitting pretty at the epicenter of it. "You don't get to have an opinion about what we do with Todoroki!"
"I do too!"
"Why?" Invisible Extra presses, gleefully.
"Because -!" Well, in for a penny, in for a goddamn million yen. "Because I'm about to make him my goddamn boyfriend!"
Silence.
Shinsou quietly slides off Todoroki's lap and scampers away to put distance from this mess, in true feline gremlin fashion.
"What?" Todoroki is shocked enough that his face actually shows a dim expression of surprise. He puts down his bowl of soba and chopsticks and everything.
"I said what I said!" Katsuki blusters, glaring down at Todoroki from across the table. From the corner of his eye, he registers Shitty Hair and Dunce Face facepalm simultaneously. Rude. "Be my boyfriend, Icyhot!"
"...Shouldn't you ask me on a date or something, first?" Todoroki inquires, looking mildly consternated. "People do a confession first and then go on a date before becoming a couple, in all the manga Fuyumi-nee likes..."
God, this dense motherfucking loser, somehow always stumbling his way to the root of everything Katsuki is too emotionally constipated to say.
"We are in the middle of a goddamn fucking forest!" Katsuki yells, sparks going off in his palms. "I will take you on a hundred dates once we are back in Musutafu! But in the meantime, will you be my boyfriend or not?!"
"Oh," Todoroki blinks back at him. His eyes have no business fucking sparkling like this, all bright and beautiful. Katsuki is suffering. "In that case... okay then. I will be your boyfriend, Bakugou."
Todoroki gives a tiny little nod of satisfaction, like he just solved an algebra problem in maths class, and he picks up his bowl and chopsticks again, back to slurping the last of his noodles, chill as you please.
He's just so - he's so -!
"Move it, Tails," Katsuki commands, and barely waits for Ojirou to get out of the way before vaulting over the table to sit down beside Todoroki. He yanks till Todoroki gets the message and puts down his now-empty bowl again, and lets himself be pulled into Katsuki's lap. The sweat on Katsuki's skin instantly chills, giving a respite from the unrelenting humid warmth of the non-air conditioned dining hall.
Katsuki noses into the nape of Todoroki's neck, grinning in triumph. Todoroki lets out a quiet hum of contentment, and a frosty coolness envelops Katsuki in a comforting cocoon.
Aizawa returns to the dining hall at that moment. "I have good news." he starts then visibly comes up short at the sight of Katsuki and Todoroki, snuggling, with Katsuki looking distinctly like a cat that got the canary.
Katsuki can see the moment Aizawa decides not asking means it won't become his problem to deal with. Good choice. There's a reason Aizawa-sensei is one of the best proheroes around, man knows to pick his battles.
"Good news," Aizawa continues, pointedly averting his gaze away from Katsuki and the pretty boy sitting in his lap. "The air-conditioner should be fixed by end of the day. So you should all be able to rest well tonight."
A loudly relieved cheer goes up around the room.
All Might ambles in then, and like Aizawa, also immediately notices the unlikely duo currently canoodling on one of the chairs. But unlike Aizawa, he does not have the good sense to act like he didn't see.
"Bakugou-shounen, Todoroki-shounen!" All Might says. "I was unaware the two of you were a couple! I should reassign you to different rooms!"
Aizawa sighs, deeply.
Katsuki puts a possessive arm around Shouto's middle. "Don't even fucking think about it!"
"But -"
"No!"
He just got Shouto to himself. And he'll be damned before he gives him up again. Not now and not ever.
(He thinks Shouto is okay with that too.)