My Hero Academia

Izuku Midoriya

緑谷出久

Story Role

Izuku begins as a Quirkless middle-school student attempting to apply to U.A. despite having no realistic path into professional hero work. His meeting with All Might changes the premise immediately: instead of discovering that he secretly possessed a power all along, he is deliberately entrusted with someone else's Quirk after demonstrating the values All Might wants his successor to embody.

The U.A. entrance examination introduces the central tension between Izuku's power and his inability to use it safely. He destroys the enormous zero-point robot to save Ochaco but catastrophically injures his limbs in the process. Recovery Girl's warning establishes that possessing One For All does not automatically make him capable of succeeding All Might.

His first year at U.A. repeatedly forces him to redefine what becoming a hero means. The USJ attack introduces the League of Villains, the Sports Festival places him against classmates whose motivations are as important as victory, and internships expose him to hero work beyond controlled school exercises.

The battle against Stain broadens the moral conflict. Izuku, Iida and Shoto confront a killer whose ideology condemns heroes motivated by fame or money, and although Stain's methods are murderous, the encounter establishes that the hero system itself can be criticized rather than treated as automatically virtuous.

The training camp and Kamino incidents bring the conflict over One For All into the open. All Might's final battle against All For One ends the public career of the Symbol of Peace, leaving Izuku in a world where his mentor can no longer personally stand between society and its most dangerous enemies.

The Shie Hassaikai operation tests Izuku against a threat whose victim is a child he previously failed to rescue immediately. His battle against Overhaul, and his determination to save Eri emotionally as well as physically, reinforces the idea that rescue is not complete merely because an enemy has been defeated.

Later school arcs focus increasingly on Izuku's relationship with One For All itself. The emergence of Blackwhip reveals that One For All contains the Quirks of previous bearers, turning his training from mastering one stockpiled ability into learning an entire inherited power system.

The Paranormal Liberation War brings Izuku directly against Shigaraki on a scale far beyond earlier villain attacks. As Shigaraki becomes capable of threatening entire cities and All For One attempts to take One For All, Izuku discovers that the struggle between the two Quirks has been developing across generations.

After the war, Izuku leaves U.A. and begins operating largely alone, believing that separating himself from his classmates will prevent All For One from targeting them. His increasingly exhausted and intimidating appearance reflects how completely he has adopted the idea that he alone must bear One For All's burden. Class 1-A ultimately rejects that premise and brings him back.

The final war places Izuku against Shigaraki while heroes across Japan confront All For One's forces. Rather than simply trying to kill Shigaraki, Izuku insists on reaching the child he has perceived within him, even when doing so requires taking enormous risks with One For All itself.