Anime protagonists are no strangers to hard work — heroes like My Hero Academia's Deku and Black Clover's Asta spend their entire childhoods with their noses to the metaphorical grindstones. On the other side of the spectrum is Saitama, who becomes the strongest character in One-Punch Man by currently ambiguous means.
Source：https://www.cbr.com/anime-like-one-punch-man-similar/
