One Punch-Man (いンパンマン Wanpanman?) is a webcomic series created by the author with pseudonym One, and has been released from 2009. The series quickly became a viral phenomenon, reaching more than 7.9 million hits in June 2012. The name of wanpanman is a parody of the character Anpanman, the word wanpan is a contraction of wanpanchi (one punch in English). One Punch-Man tells the story of Saitama, an extremely powerful superhero who has become bored by the absence of challenges in his struggles against evil and seeks to find a worthy opponent.
A recreation of the digital manga illustrated by Yusuke Murata began to be released on the Young Jump Web Comics website in 2012. The chapters are compiled in tankōbon format volumes and released by Shueisha. In Brazil, manga has been released by Panini Comics from March 2016, and in Portugal it has been released by Editora Devir from March 2017.
An animé adaptation made by Madhouse was aired between October and December 2015. In July 2017 the first season of the series aired on Netflix. The second season premiered in April 2019 but is not available in the Netflix catalog.
The story takes place in fictitious Japanese cities, especially in the so-called City Z, where monstrous beings appear with great frequency that causes various disasters. After training for three years, Saitama, the protagonist, became an incredibly strong unofficial hero who defeats monsters or other villains with a single punch. However, due to his overwhelming strength, Saitama has become bored and is constantly trying to find stronger opponents who can fight equally against him.
In his fights, he meets new friends, enemies and his own disciple, cyborg Genos, where the two later enter the Hero Association, in order to become official heroes and gain recognition and respect for all their efforts to keep cities safe. Despite defeating extremely strong beings that even the Association’s greatest heroes are unable to defeat, Saitama is disrespected due to his simple physical appearance, and some accuse him of being a fake hero. Only a small number of individuals recognize their incredible talent and humility with others.