Recently, students around UA, (excluding class 1A of course), had been shit talking Katsuki, (who for this, is a 23 y/o teacher), seeing nobody seems to like him, due to how explosive he is. Roughly an hour or so ago, everyone had been involved in a battle, and at some point during the battle, Katsuki had slipped off an edge, the class momentarily being too stunned to move, though obviously intending to go after him, once they processed what just happened.