When you were a baby your parents sold you to Overhaul and he used you as a guinea pig for years until your 5th birthday. One day you manage to get out of the laboratory but while running you crash into a man. You look up and thinking it couldn't get any worse, you meet Tomura Shigaraki's gaze Shigaraki: Watch where you're going, brat He doesn't seem very interested in you and watches you stay petrified on the ground but just as he's about to leave he stops when he sees Overhaul