i don't date extras (kiribakukami)

The door to bakugos room

Two nights had passed, nobody had been mad, so the redhead felt confident enough to try and convince Bakugo to join them again. The grumpy one had clicked his tongue and grunted. Then he had shown up with the book he was reading and had sat on the bed as two nights before. This time he hadn't been awake much, he was aware it would happen, though.
"Next fucking time we are doing this in my room. Your bed is a fucking nightmare", it was the first time Bakugo complained about Kirishima's bed since literally first year, way before they had started dating. He had never had any problem with his bed. At all. Never. Eijiro tried to read something else under those half closed eyes, unable to decipher what was going on. "Hey, Pikachu, you better go to bed before I have to fucking go and find you, you hear me?" Kaminari was surprised about this, even though he didn't bother showing it. Kirishima smiled, loving Bakugo so badly right now, he loved when he cared about people. And he was kind of adamant with schedules, so it wasn't that surprising.
"Right, right, we don't want to wake up Kiri", he joked with a smile on his face that made Katsuki's eyebrow rise. Eijiro's face became a poem. He didn't have a clue of what all this meant, even though he had seen Denki in bed with them the morning after and Bakugo had told him he had made him get some sleep.
"Dude, you better not be making out with him while I sleep without telling me", he laughed, playfully, taking the sentence as a mean to tease him for sleeping like a rock, far from actually believing those two had anything going on.

That night, Denki only stood awake for half an hour after Kirishima went to bed. He looked at the redhead being the big spoon and he couldn't but think Katsuki's nice smell and touch would feel great. He was actually growing cold. And Bakugo's body was warm and nice the other night. And he was facing the huge open space that was left, inviting, right in front of Katsuki's asleep body. He tentatively laid down by his side. He felt the other blonde move behind him and a strong arm fell over him, half trapping half protecting him. Katsuki grunted and his hand moved trying to push something away. It was his phone. The light of his phone was what he was trying to turn off. Could Blasty blast his phone being asleep? He didn't want to find out, to be fair. He left his phone by the nightstand and felt the other man pull him against his body, chest warm against his back.

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"You extras coming or not?" Kirishima looked surprised when Bakugo stood up, hands in his pockets, waiting for them, a couple of nights later.
"Sure thing. Nighty night, gang! Game night at Kiri's it is!", said Denki waving militarily with a grin and a finger gun. The elevator's doors were already opening when Katsuki spoke again.
"We're not going to Kiri's. Take your fucking consoles and your fucking teddy bears or whatever the hell you need. That bed is the shittiest fucking bed and I bet your room is a fucking pile of doom heaven, so we are going to my room from now on". Kirishima shouldn't have been as surprised, Bakugo had said already something about his bed two nights ago, and yesterday while they were sleeping together there. It was true that Katsuki's was some centimeters wider, but he had never complained before two days ago. Also, did he just say 'from now on?'.
They didn't take long to set everything in Katsuki's room. His room was spotless, as it always was, his TV and bed were, in fact, bigger than the other two guys'. Kirishima could have sworn that third pillow in the bed wasn't there yesterday.
"Wow, Kachan, I'm impressed, I had never been into your room. You're so secretive about it I thought you had a sex dungeon or something hiding in here".
"Keep saying dumb shit and I'll fucking gag you", he threatened, pointing a finger to Denki's face while the messy blonde laughed wholeheartedly.
"Come on, Blasty, are you trying to convince me to talk less or more? You shouldn't be threatening me with a good time. But maybe that's because you don't really want to shut me up", he grinned, forcing a jokishly sexy face, biting his lip, framing his face with a finger gun and winking. Kirishima was too shocked by the scene to say anything, just watching that metaphorical tennis game. And the ball was in Bakugo's yard now. A Bakugo who was used to playing cocky and be harsh on everybody, but wasn't as used to someone being bratty to him and just not giving shit about anything.
"Whatever, moron, nothing to see here, no sex dungeon or shit, just don't want everybody coming in here for shit", he grunted.
"Oh, pity! I was still expecting the sex dungeon to just be hidden under the mattress or something", he looked under the bed playfully, Katsuki pushed him with his foot, destabilizing him. The blonde mess laughed again, falling to the ground, making Katsuki grunt in return. Kiri was still in shock about all this, not wanting to blink right now in case he missed any interactions between those two, so weird, so fun, so cute, so not going to complain.

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It had definitely become a routine since then. Kirishima and Kaminari had almost stopped playing alone. Denki had started to notice Bakugo's moods, Kirishima could tell before when Katsuki wanted to be alone and when he didn't want to, not that his boyfriend had ever complained if he joined him one of the days he didn't show any interest. But now Kaminari was also stepping up to pace. Kiri could even see how he had started playfully teasing the other one in public like he did when they were in private. Not to the point of making sexual remarks in front of others, not even with the clownest of his faces, Katsuki was too easy to annoy, but he liked bothering him, playing with fire, making him angry. He had started to learn how to piss him but just not enough so he would close the door on their face. That had only happened once, a day Denki had teased too close to the sun and Kirishima literally had received a blast on the chest in his place. The warning was for Denki, and they all knew, but Kiri was used to using his quirk to let Katsuki release stress, so Denki laughed and made some bad pun about some movie Bakugo liked, making him grunt and slam the door quite too violently. Anyway, Denki had learnt not to push that hard ever again, he liked their nights together. Kirishima, being honest, had to say he was finding it too interesting for his own good. He liked that. He liked seeing their dynamic, being the only audience in those moments. Katsuki still played tough, as he always did, but he was now way less annoyed and way more entertained than most people noticed when around Denki. Kirishima knew it. Bakugo knew he knew it. None of them knew if Denki was aware of that. He never seemed to pay attention to anything long enough to be aware of much. Kiri had noticed long ago that he played dumber than he was, the same way Bakugo played angrier and tougher than he was. He didn't care much, he had to say, they could act however they wanted as far as he could be by their side.