Onepunch-Man (ONE) Manga
Other name: ワンパンマン; One Punch Man
Genres: Action, Comedy, Sci-fi, Supernatural
Follows the life of an average hero who manages to win all battles with only one punch. This ability seems to frustrate him as he no longer feels the thrill and adrenaline of fighting a tough battle, which leads to him questioning his past desire of being strong.
This is the original webcomic version of Onepunch-Man