Fluorescent Adolescent

Eijirou comes back to his hometown after 5 years, running away from the unthought problems of his teenage life.
Bakugou has always lived in the same house, same street and same city, he's used to the changes, and to missing.
Neither of them have the mental space to think about falling in love, but still... that's the kind of thing you can't plan for.
Or
Teenage adventures, first times and overcoming trauma, some things are going to hurt but I promise a happy ending :)