Chapter Text
Bakugou Katsuki knew it was a bad idea to attend a dorm party. He didn’t want to hang out with people, but at least he could just sit in the corner with a drink and snarl at anyone who got too close. His friends kept trying to drag him out of his corner, and they almost didn’t succeed, until Mina suggested they play Truth or Dare. The only rule was that they couldn’t damage any property or hurt anyone on purpose, and Mineta wasn’t allowed to ask or dare the girls anything. Mina asked if he wanted to play and Bakugou rolled his eyes. “Of course I fucking don’t, Raccoon Eyes. Don’t be stupid.”
“Ahh, too scared to play I see. It’s okay, not everyone is brave enough for Truth or Dare.” Sero smirks at the blonde, raising a brow at him.
Bakugou reacts immediately, looking like a cat with its hackles raised. “Fuck you Soy Sauce, I’m not scared of anything!” Bakugou vaguely realizes that one of these days he really needs to not rise to the occasion, since they now know how to get him to agree to anything, but it’s not stopping him from getting up from the corner and stomping over to the couches in the common room where the rest of the class is assembled. He drops down on the floor next to Kirishima, scowl still marring his features. Kiri drops a hand on the blonde’s shoulder and he immediately shrugs it off. The redhead just fixes him with a beaming smile, and Bakugou rolls his eyes.
“Alright!” Mina claps her hands together and grins. “I’ll start. Mmmm...” She squints around the circle, deciding on her victim. “Hmmm. Iida!” She jumps and points at their class president, who blinks. “Truth or dare?!”
Iida inhales, then chops the air with his hand. “A hero always stands for truth, so that is what I will select!” Bakugou rolls his eyes. He wasn’t surprised that Class Rep wasn’t going to do a dare.
“Is it true that you iron your underwear?” Mina grins as Iida’s face turns bright red.
“I-It’s important that a hero’s garments always be clean and pressed!” The class cracks up, because it’s really not that surprising that Iida irons his underwear. It doesn’t make it any less amusing though. Iida’s turn is next and he singles out Tsu. She selects dare, and he dares her to try to reach an apple in the kitchen area with her tongue. She smirks a little and accomplishes it easily, blushing at the cheers of the class. Tsu asks Ochako, who also selects dare, and Tsu dares her to spend the next turn floating upside down on the ceiling. Ochako complies, and from her spot above them she narrows in on Todoroki.
“Todoroki, truth or dare?”
“Uh, truth, I guess.”
Bakugou snorts. IcyHot is chickening out. Uraraka just smiles though. “Okay! Um…” She taps a finger against her nose as she thinks. “Have you ever cooked an egg on your left side?”
Todoroki blinks, the gives the lightest of shrugs. “Uh, yeah. My brothers and I were bored.” The girls burst into giggles, and he gives the slightest of smiles.
“Okay, someone has to dare him to do that later.” Mina grins. “Your turn, Todoroki.”
“Ah, yes. Midoriya, truth or dare?” Bakugou was going to spend this entire game rolling his eyes, evidently. Obviously IcyHot would pick Deku, he was obsessed with him. It was disgusting.
“Oh! Um, dare, I guess?” Deku looked over at Uraraka as she released herself from the ceiling, landed nimbly on her feet, and sat back down. He gave her a smile, even Bakugou had to admit she’d come pretty far with her quirk.
Todoroki nods. “Then Midoriya, I dare you to spend three rounds without a shirt.” Todoroki smirks as Deku’s cheeks heat up, the blush overtaking his whole face. Ugh, you’re not subtle, IcyHot.
Midoriya removes his shirt, still burning in embarrassment, and tucks it into his lap. He does have a pretty nice physique now, and Todoroki is definitely not the only one in class eyeballing him.
“Okay, um, my turn.” Don’t you fucking dare Deku- “Kacchan? Truth or dare?”
DAMMIT. “Tch, dare. Obviously.” Bakugou rolls his eyes. He’s sure Deku won’t make him do anything weird. It’s not like Mina had asked him or something.
“Oh! Okay. Um… Kacchan, I dare you to prank call your dad.”
Tch, easy. Bakugou pulls his phone out from his pocket. “Siri, call Dad.”
“Calling Daddy.”
Bakugou misses Denki’s eyes widening in panic, the electric blonde only able to start moving as the call connects. Bakugou is confused about why his father is in his phone as Daddy before a new noise enters the room.
Kirishima’s phone starts ringing.
The class, as one, turn from Bakugou to look at Kirishima. Even Bakugou looks at the redhead. He fishes his phone out, and Bakugou can see from where he’s sitting that it’s him calling Kirishima’s phone. He slams his finger on the end call button, which silences Kirishima’s ringing.
The room absolutely EXPLODES into noise.
People are laughing so hard they’re rolling on the floor (his so-called squad), other people are stammering in embarrassment (Deku), Denki is covering his face with his hands, and Bakugou lets out a scream.
“WHO THE FUCK DID THIS?”
Jirou wipes an errant tear from her eye from where she and Momo are leaning on each other and laughing. “Obviously you did, baby boy.” She and Momo burst into fresh peals of laughter, and the class follows suit. Bakugou risks looking at Kirishima, who is the only other person not laughing. Even Deku is chuckling at this point, his face buried in Uraraka’s shoulder. Kiri’s face is bright red, and Bakugou can’t help but feel his heart sink a little. Fuck, the guy is his best friend, not that he’d ever admit that out loud. He doesn’t deserve this.
He lets off a chain of explosions from his hands. “SHUT the fuck UP, all of you!” The class does, since now they’re concerned that Bakugou is going to blow up the common room. Iida jumps in and chastises the class about messing with other peoples’ phone settings or something, and Bakugou leans back. He can’t stop looking at Kirishima, at the sad look on the redhead’s face. It eats at him so much that he doesn’t realize the game has continued without him. They do a few more harmless rounds before Iida calls it, sending them all up to bed. Mina pouts that they never got Todoroki to cook an egg on his left side the whole way up to the dorms. Bakugou sincerely hopes that the class will let this go.
He should know better.
It starts up again the very next day. He really needs to do something to scare his idiot classmates straight because they don’t seem to be afraid of him anymore, and that’s not okay. As they’re passing papers around for a pairs assignment Sero casually asks Bakugou if he’ll be working with his Daddy. Aizawa’s eyes narrow before the class erupts into giggles. Kirishima gives their classmates a half smile. Aizawa barks out orders to get them under control, and Bakugou can’t stop looking at Kiri. The redhead’s eyes slide to him, and for a second Bakugou swears that Kiri smirks at him. The blonde snaps his eyes up front, back to Aizawa. He doesn’t look anywhere else for the rest of class.
Sero saying it seems to have released a flood though. People are saying it all day, and Bakugou’s getting more and more on edge every time someone does. Even Deku has the balls to make mention of Kirishima being Bakugou’s Daddy. Bakugou didn’t even know that Deku knew what that meant but the stupid smirk on his stupid face makes him think otherwise. He rears an arm back to blast Deku and his stupid smirk with an explosion, but a strong grip captures his wrist. At first he thinks it’s Aizawa, but he looks back and his scowl vanishes as he sees Kirishima, frowning, holding on to his wrist. The small explosions already littering his palms fizzle out, and without saying a word Kirishima pulls him away from Deku. The green-haired boy watches with his eyes wide as Bakugou just quietly follows.
Kiri leads him down a hallway, pulling open a door, and pulling the blonde in. “What the fuck, Kiri-” He doesn’t get to finish his sentence because he’s being pushed into the wall.
“We should talk about this.”
“Yeah, that’s fine, but why are we in the closet-”
Bakugou’s eyes widen as Kirishima steps closer, into his personal space, a half smile tugging at his lips. “I want you to know that I didn’t change your phone. I don’t know who did. But I’m also not… opposed.” Kiri’s mouth pulls into a full smirk and Bakugou is at a complete loss for words. His mouth moves but it’s like his entire vocabulary has fallen out of his mind. Kirishima gives this dark, rumbling chuckle and Bakugou’s toes curl in his shoes. What is even happening right now. “Tell you what, let’s play more truth or dare. That’ll help get your mouth working. I’ll start. Bakugou...” Kiri leans in closer, inches from the blonde’s face. “Truth or dare?”
Bakugou swallows thickly and tries to lean back, to put space between him and Kiri because goddamn he can’t breathe. “T-truth?” He couldn’t trust himself to say dare, he was nervous about what Kirishima would dare him to do.
The redhead grinned. “So tell me, Bakugou, nitroglycerin tastes sweet. Do you taste sweet?”
The blonde blinks. “Uh, I guess? I mean I don’t ingest my own fucking sweat very oft-” He cuts off, making a weird squeak in his throat as Kirishima raises one of the blonde’s hands to his face and licks up his palm and fingers. Kirishima chuckles again, the noise sending electric jolts up his spine. “Fuck Kiri...”
“Ah, so you do. Interesting. How about you go again. Truth or dare, Katsuki?” Kirishima breathes his name and Bakugou’s knees get a little weak.
“...dare.” His voice wavers and he feels his cheeks flush. What the fuck were these reactions?
“Okay, dare.” Kirishima leans in close again, sliding one hand to the small of Bakugou’s back and one around the back of his neck. “I dare you to call me what I know you want to call me.”
Bakugou’s whole body shudders and Kiri tightens his grip. The blonde’s immediate response is rebellion, wanting to tell Kirishima to fuck off, slap the redhead’s hands away. He can’t command his limbs to comply though, and his mouth is just as much of a traitor. “Daddy...” he whispers, and then Kirishima’s mouth is crushed to his, and he didn’t realize how much he wanted this, fuck…
“Good boy...” Kirishima purrs and presses his body flush up against the blonde and Bakugou makes this high keening noise, and he’s not sure if he’s going to die of embarrassment or of the fact that all of his blood has vacated his body to reside in his dick. Kiri presses up against the erection and Bakugou can’t hold back his moan. “Mm, you really like this, don’t you.” The redhead leans close and Bakugou’s mind is flailing. Who is this and what have they done with Kirishima? For the past three years Kiri was all sunshine and smiles, all ‘yeah bro!’ and harping about manliness. Not this gravel voice, not this thigh softly grinding into the apex between Bakugou’s thighs, certainly not Daddy. Kiri isn’t done though. “I like it too, baby. I want to hear you call me Daddy while you’re bouncing on my dick. You want that, baby? You want to cum on Daddy’s dick?” The redhead bites down on Bakugou’s neck.
White hot desire slams through his body, and Bakugou’s pretty sure he blacked out for a second. When he comes to he realizes that the front of his school uniform is wet. Kirishima… Kiri brought him to orgasm without touching him, just by talking to him and that one stupid bite. Bakugou would feel ashamed if he didn’t think it was the hottest thing he’d ever experienced. Kiri gives another chuckle and kisses the blonde’s lips once more, Bakugou automatically moving his head to chase Kiri’s mouth as he steps back.
“We’ll have to continue this later. Why don’t you keep me in your phone like that, and I’ll call you.” The redhead grins and slips out of the closet. Bakugou is left standing there, slumped against the wall, the very obvious evidence of how he feels about Kirishima soaking into the front of his pants. It takes him a beat to realize that he has to get back to the dorms like this.
Nearly the entire building hears the very loud ‘FUCK’ from the first floor janitor closet.