He knew it was embarrassing, standing here like some kind of prize to be won. But if he was going to do this, then he was going to give it his all. That was just the kind of guy he was - all or nothing, no half-measures. And if that meant screaming his lungs out to get people to line up and pay him to kiss them, then so be it.

"COME GET YOUR KISSES, YOU BASTARDS!" Bakugo bellowed, his voice booming through the crowded courtyard. A few students jumped at the sudden outburst, startled by the intensity in his tone. But Bakugo paid them no mind, his gaze sweeping over the sea of faces before him, daring anyone to step up and claim their prize.

AS IN AN ACTUAL KISSING BOOTH NOT THE MOVIE.

He was bullied into it by the others. probably mostly mina LOL

He's in 3A so YES he's 18.. inspired by the timeskip scene of them getting back to school in 3a where he's hiding behind iida to get away from girls hahaha