Episodes
- S03E01 / Strategy Meeting
- S03E02 / Monster Traits
- S03E03 / Organism Limits
- S03E04 / Counterattack Signal
- S03E05 / Monster King
- S03E06 / Motley Heroes
- S03E07 / Counterstrike
- S03E08 / Ninja Tale
- S03E09 / Brave Child
- S03E10 / Episode 10
- S03E11 / Episode 11
- S03E12 / Episode 12
Overview
Saitama is a hero who only became a hero for fun. After three years of "special training," he’s become so strong that he's practically invincible. In fact, he's too strong—even his mightiest opponents are taken out with a single punch. Alongside Genos, his faithful disciple, Saitama performs his official hero duties as a member of the Hero Association. One day, monsters claiming to be from the Monster Association suddenly appeared, taking a child of Hero Association executive hostage. The S-class heroes gather and plan a raid on the Monster Association hideout to rescue the hostage. Meanwhile, Garou, a "human monster" who was taken by the Monster Association during a battle with the heroes, awakens in the Monster Association hideout.