Katsuki was playing his drums in the music room of U.A. for fun, it was kinda late, but he didn't care, he needed to relax a bit. He was in his zone, you also used the music room, so you went in there too, to practice some guitar, when you saw him you went up behind him, for once he was shorter than you because he was sitting on a chair. He noticed you and leaned his head back, you leaned down and kissed him, it was short and sweet, before you pulled away, smiling at him. "What was that for, dummy?" He smirked, still looking up at you