In a world where people with supernatural “personalities” are the norm. Midoriya Izuhisa, a.k.a. “Deku,” a boy with no personality, meets the No. 1 hero All Might, whom he admires, and sees the qualities of a hero hidden within him. He inherited One for All (OFA) from All Might. He enrolls in Yuei High School, a prestigious school that produces heroes, and grows up together with his classmates in the Hero Department, Class A of the 1st Year, aiming to become a “hero” who can save society and people with his “personality”.