One is the pen name of the Japanese creator who wrote and illustrated the original web-based One Punch Man, the story the anime is based on. Their manga, later redrawn by Yusuke Murata for digital publication, provided the source material adapted into anime by Madhouse and J.C.Staff.
One is the original creator of One Punch Man, having written and drawn the story as a free webcomic starting in 2009 before it grew into one of the most popular series on the internet. The premise, a hero so overwhelmingly strong that every fight ends in a single punch, became the foundation for the entire franchise, including the anime adaptation. Artist Yusuke Murata later partnered with One to redraw the story in more detailed form for its official digital serialization, which became the basis for the anime's character designs and world.
Beyond One Punch Man, One is also known as the creator of Mob Psycho 100, another webcomic turned hit anime that shares the same blend of understated humor and explosive action. Both series helped establish One as one of the most influential webcomic creators to break into mainstream Japanese publishing, despite maintaining a largely anonymous public identity. One continues to write the story for the digital One Punch Man manga while Murata handles the art.
One is the pen name of the Japanese creator who wrote and illustrated the original web-based One Punch Man, starting the story as a free webcomic in 2009. It grew into one of the most popular series on the internet before being adapted into anime.
The premise follows a hero so overwhelmingly strong that every fight ends in a single punch. That concept became the foundation for the entire franchise, including the anime adaptation.
Artist Yusuke Murata partnered with One to redraw the story in more detailed form for its official digital serialization. That redrawn version became the basis for the anime's character designs and world.
One is also the creator of Mob Psycho 100, another webcomic turned hit anime. It shares One Punch Man's blend of understated humor and explosive action.
One has maintained a largely anonymous public identity despite becoming one of the most influential webcomic creators to break into mainstream Japanese publishing. One continues to write the story for the digital One Punch Man manga while Murata handles the art.

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