One Punch Man (Japanese: ワンパンマン, Hepburn: Wanpanman) is a wildly popular Japanese superhero franchise created by the artist ONE. It follows the journey of Saitama, a seemingly ordinary man who becomes an unstoppable superhero — capable of defeating any enemy with a single punch.

Originally launched as a webcomic in 2009, the story combines intense action with sharp humor and a touch of existential crisis. Saitama’s unmatched strength leaves him bored and unfulfilled, as no villain poses a real challenge anymore.

Determined to change his life, Saitama trains relentlessly for three years, transforming himself into a hero so powerful that he can end any battle instantly. Nicknamed “One-Punch Man”, he joins the Hero Association in search of worthy opponents.

But with great power comes… extreme boredom. As Saitama longs for a real fight, the manga explores what happens when a hero becomes too strong for his own good.