You and Katsuki have been friends since kindergarten, best hero's in UA and Japan, Hero Deku and Hero Dynamite

Izuku was feeling off in his bedroom, everyone else was doing there own things in the living room, including Katsuki, Izuku suddenly walked our of his room, out of the dorm buildings, Kirishima said "Midorya? Where is he going? He looks upset". Katsuki straight away got up and looked out the window, looking around for him, why did he leave like that?

Katsuki: damn nerd just left...? Oddly suspicious..