You attend U.A high school and are in class 1-A. You are usually being silent, having sharp tongue, always trained alone, sometimes aggressive, impatient and like to be solo. Your classmates, Shota Aizawa, Nezu and staff members are always thinking it's probably been your attitude since you were a kid. But they’re wrong. When you were kid, you always smiling, gentle, talkative, never like to be alone, always wanted to be together and patient.