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Hanta, Mina, and Denki were tired of seeing Katsuki and Eijirou skate around their feelings for each other. It had been happening since their first year and it just got worse as they grew older.
Once the war was done and the only thing they had to worry about was actual classwork, it gave the duo enough leeway to hang out more, and in extension, the squad got together for movie nights or to play games.
But everytime they did, the three of them would get caught in the crossfire. Whether it was a game of eye-fucking each other or just sitting close, it was stilted. Awkward. They couldn't even have a meal together without the tension between them cutting through the table.
Surprisingly, Denki was the one to bring it up. He decided enough was enough and messaged both Hanta and Mina, telling them to get to his room for a “meeting”.
What they had in mind could get their faces blown off, but Katsuki was action-driven and Eijirou was oblivious as fuck. There were not many other options for them to spin through that would make one or both of them snap.
It happens one day when all of them are piled in Hanta's room. A video game plays on the TV. Eijirou just finished a race he had against Denki, celebrating by sticking his tongue out at him and laughing.
Mina glances at Hanta to confirm their idea is in action. With a nod of approval, she clears her throat. It's soft enough that Katsuki doesn't acknowledge it, still scrolling through his phone, but it does gain the attention of Eijirou who stops hassling Denki.
“You okay, Meens?” Eijirou tilts his head, settling back down on the floor. “What's up?”
She looks at Eijirou and then Katsuki, who paused what he was doing to gaze at her due to Eijirou's inquiry. Good. Both of them are focused on her. Exactly what she wanted.
“I've been wondering.” Mina starts. Shuffling on her butt, she situates herself closer to Katsuki. “Bakugou, have you ever been kissed?”
Katsuki goes from nonchalant to a blushing mess in less than two seconds. His face is so red he could match Eijirou's hair. A couple of pops of his quirk come from his free hand. It takes a moment for his response to fly out of his lips. “What the fuck kind of question is that?”
Mina doesn't react in a smug manner or laugh at his reaction. She keeps herself calm and scoots a few inches more, watching Katsuki begin to shrink on himself the closer she gets.
“I'm just curious.” She feigns innocence, batting her eyelashes. “You've got a really pretty face and I'm sure someone wanted to know how it felt to kiss you.” Mina puts her hands in front of her, adjusting her sitting position to one where it looks like she's about to crawl. “So?”
Katsuki looks at the door firmly shut, confirming to everyone that he was thinking about flying out and closing himself away from them for an indefinite amount of time. They couldn't have that.
Next to Denki, Eijirou is silent. He doesn't tell them to stop or leave Katsuki be like he usually does. His eyes stay firmly on Mina who turns up the charm by getting close enough to place her hand on Katsuki's shoulder. He has to be curious too; that's the only reason why he hasn't spoken up.
“If you haven't, that's a real shame.” She continues. Katsuki stays tight-lipped, hand gripping his phone like a lifeline. It's rare to see him so quiet but he's at least cooperating in some regard. Mina takes that opportunity and does the next step by throwing her legs over his lap, straddling him.
“I'm dying to know myself.” She murmurs, glancing down at his lips and then back up to his eyes. She is not going to force something on Katsuki by any means. He could push her off at any time or tell her to go away.
But he doesn’t. Instead, the phone clatters softly onto the rug only for Katsuki to bury his fingers into the carpet next to it.
Mina hums in approval. He is giving her permission.
Mina brushes a stray lock of blond hair out of his face. His eyes remain steadfast, going between hers to try and get any sort of answer as to why she's doing this out of nowhere. It's all in vain when she closes her eyes, hiding away the true nature of her antics before swooping in to claim his lips with her own.
She's kissed her fair share of people over the time she's spent at UA. Even the people who are in the room (sans Eijirou) have shared a kiss with her. But with Katsuki, he's a statue in all ways of the word, lips tight and face scrunched up. Hands remain buried into soft strings he threatens to pull out.
That is, until she begins to kiss him right. Her mouth sways over his, trying to garner something out of him. She turns her head, his upper lip caught between hers. It's an effort to get him to relax.
Luckily, her charms work and he starts to loosen. His face softens and lips slacken and she doesn't waste time gripping the nape of his neck to kiss him properly.
Only the sounds of their activity bounces off the walls of the room. Eijirou stares slack-jawed. Denki itches to grab his phone and take a picture of Katsuki's obvious first kiss. Hanta leans back a little to pretend like he isn't getting a better angle.
After a minute, she pulls back. Her eyes flutter open to see Katsuki already staring at her. His pupils are blown wide and lips quiver like his body is busy memorizing the feeling.
“Not bad.” She whispers, smiling at the noise of Katsuki's jaw clamping shut. “Could use a little work, don't you think?” Without moving, her gaze turns to Denki and she gestures her head towards Katsuki.
Denki swallows. Now it's his time. He and Katsuki's friendship is rocky, not because he hates him but Denki just isn't as close to Katsuki as he is with Mina and Eijirou. It doesn't stop him from doing everything in his power to show Katsuki the ropes.
When he moves in, Mina leans back, hands poised on the floor so she can safely extract herself and Denki can take control. Hanta helps her along, both of them looking to Eijirou who hadn't taken his eyes off Katsuki for one second. The only difference is he's now also holding the carpet, but his fingers are sharpened and the rug around it is tattered.
If it were any other day, Hanta would complain. But this is what they were aiming for.
Meanwhile, Denki grins down at Katsuki and bends forward to give him a kiss of his own. Mina was soft and kept things at a minimum. Denki adds more. The kiss turns wet as he swipes his tongue across Katsuki's bottom lip and shoves it in when his mouth opens around a gasp.
He tastes like cinnamon gum, Denki realizes, as he curls his tongue around Katsuki's like it's a game of tag.
Katsuki's hands release and raise up to grip a handful of Denki’s hair and a bicep. It doesn't move after that, like he's too confused on what to do afterwards. Denki hums softly against his mouth to tell him it's fine and tugs at his bottom lip with his teeth.
That gets a reaction everyone catches, because Katsuki moans. Eijirou sits up pin straight and Mina bites her lip to hide how it's making her feel. It shouldn't be a turn on to hear it, but seeing Katsuki who is usually a foul-mouthed brat melt into a submissive mess causes butterflies to flutter in her tummy.
Hanta can't take it anymore. Denki is getting way too invested and if it continues, he fears it'll go overboard. A thin string of saliva connects them before it breaks like the connection does between Katsuki and Denki's bodies as Hanta puts a hand on his chest.
Denki blinks like he's coming back to himself and blushes hard while scooting away. He's done his part. Now for Hanta to put the final nail in the coffin.
This could be the end-all. The four know of Katsuki's weaknesses, some harmless and some not so much. When it comes to his neck, it is a… conflicting subject.
But that's what Hanta plans to change.
“C’mere.” Hanta murmurs before kissing him. It is nowhere near the same as Mina and Denki's was. Hanta is rough, taking Katsuki's face in his hands and keeping him still. Katsuki can't keep up with the pace but it seems he isn't making the effort to do so in the first place. He relents and allows Hanta entry.
Eijirou hadn't spoken a word the whole time, yet his expression says everything the trio have led him up to. He's getting impatient. Antsy. It screams for a turn, or to simply take over and have Katsuki to himself.
Hanta is not ready to give him up, though. Katsuki's hands rake through his hair and run down to his elbows, too engrossed in the kiss to care about where he ends up touching.
It doesn't last. Hanta takes it one more step further and gestures to Katsuki to lay on his back, giving him the space he needs to crawl over him and kiss him again. He isn't one to waste any precious seconds and repeats Denki's earlier actions. Tongue meets tongue. Teeth scrape a lip. Sounds break through the otherwise silent ambience of the room.
Eventually, Hanta breaks off to plant his lips on the curve of Katsuki's neck.
It's a testing press. He doesn't want to push Katsuki but rather have him understand that kissing here isn't dangerous. His mouth isn't a hand pulling him into a dark void. He's here to make him feel good (and get Eijirou to do something). Kisses that are feather-light travel from a random spot and then get to his pulse point only for him to close his lips and suck in.
That earns him the noise he had been hoping for. Like with Denki, Katsuki moans.
But it isn't just a sound.
He says a word. A name.
“Kirishima.”
A growl stops Hanta in his tracks. Lips pause and eyes glance over to the redhead. Gone is the shocked expression, now replaced by pure possessiveness.
Quietly, low enough the three have to strain to hear, Eijirou mumbles to them.
“Get out.”
Without a word, Hanta removes himself from Katsuki. The look on Eijirou's face is one none of them have seen before. Katsuki is beet red, also staring at Eijirou. Hanta flicks his gaze to Mina and Denki, all of them sharing the thought of escaping so they don't face the wrath of two horny men.
The three leave, all of them unsure what to do or say. They completed the task at hand and now they're outside of Hanta's own dorm room while Katsuki whimpers behind his door.
They decide to all camp in Mina's dorm for the night.
The next morning, Hanta is grabbing some cereal while Mina makes a cup of coffee. Denki trudges in a few minutes later, rubbing the sleep out of his eyes.
They aren't alone for long. The door swings open and in comes Eijirou. Last night's greed has disappeared. Instead a cheery tune falls out of his lips, the corners of them curled up into a soft smile.
He's not a morning person in the slightest so to see him so happy at 7 am is like seeing a different person altogether.
The elation grows tenfold as the door opens once more about ten minutes later and in comes Katsuki, but all three of them have to hold back a gasp at the sight.
He's absolutely covered in bites. Bright red marks litter his skin like parts of a map, slowly going underneath his tank top. He avoids their gazes so heavily as he walks - no, limps - to the refrigerator to grab his breakfast.
And with one quick smirk, Denki is the one to speak up.
“Looks like it worked.”
No elaboration. No explanation. All Eijirou does is grin over in amusement as Katsuki flips him off.
None of them bring up the night again, but there's a quiet thanks simmering under Katsuki and Eijirou's now established relationship and that's all that matters.