A hello/good-bye kiss that is given without thinking - where neither person thinks twice about it.
“I’m done.” Bakugou stood up from his seat and grabbed his now-empty lunch tray. “See your sorry asses later, I guess.”
Kaminari grunted a goodbye, too sleepy due to a full stomach and the intense summer heat to be any more enthusiastic. Bakugou turned his head to stare pointedly at Kirishima.
“Uhhh... I promised Tetsutetsu I would spar with him this afternoon, so... I’ll text you.”
Denki laid his head on his folded arms on the table, brain too dead to even come up with some kind of teasing remark for his bro sitting in front of him. His eyelids felt heavy, maybe he could sleep for a little while right there, Kirishima would wake him up when it was time to leave... yeah, that sounded like a good idea...
He blinked slowly a few times; something in the back of his brain told him he should probably be worried about Kirishima’s well-being as Bakugou got closer and closer to his face-
Suddenly Denki was very awake.
He had seen it. He didn’t just dream it, right? No, it had definitely happened.
Bakugou had kissed Kirishima.
Denki’s jaw hurt with how wide his mouth fell open. No words would come out.
It was only a tiny peck, didn’t last longer than a second; Kirishima had smiled at Bakugou and the blond turned around and left. Kirishima leaned on one hand and sighed dreamily, after a minute his eyes turned and he made eye contact with the shocked boy.
“What’s wrong, man? You look pale.” He said.
“Dude, what- how-“ Kaminari gestured with his hands to the space where he had just seen his best friend have his purity taken away. Kirishima only raised an eyebrow in confusion.
“Bakugou just kissed you. Our Bakugou. Bakugou ‘I’ll kill you if you so much as look my way’ Katsuki. That Bakugou.”
It was like the redhead hadn’t realized it until that moment, because his eyes grew twice their usual size and his cheeks turned the colour of his hair. “Oh- y-yeah, that happens... sometimes...”
“What?!” Denki felt many emotions at once: surprise, relief, disgust, happiness, worry, but above everything else... “Why didn’t I know about this?! I thought we were best bros?! How could you betray our friendship like this?!”
“I- I don’t know, Denki, it just happened!” Kirishima buried his face in his hands. “We didn’t want to make a big deal out of it, so...” He shot his best puppy eyes at his friend “We just.. haven’t told anybody yet, please don’t take it personal?”
Denki faked a pout. “I’ll have to think about it.” Then he added, “I can’t wait to tell Mina she owes me 20 bucks.”