Saitama, an ordinary-looking guy, has an unusual hobby: he’s a hero for fun. After undergoing intense training for three years—which resulted in him losing all his hair—Saitama gained immense strength, allowing him to defeat any adversary with a single punch. This overwhelming power, however, comes with a downside: battles no longer thrill him, leaving him utterly bored.
Everything changes when Saitama meets Genos, a 19-year-old cyborg who is amazed by Saitama’s incredible strength and asks to be his student. Genos suggests they join the Hero Association to gain official recognition and contribute positively to society. Surprised to learn that he’s not well-known, Saitama agrees. As he encounters new allies and faces fresh challenges, Saitama finds himself on a path that might just bring back the excitement of fighting he’s been missing.
[Adapted from MAL]