One-Punch Man: Road to Hero
One Punch Man: Road to Hero · ワンパンマン「ロード・トゥ・ヒーロー」
Synopsis
OVA bundled with the 10th volume of the One Punch Man manga. It features an original story by the series' mangaka, ONE, about the secret story of the birth of Saitama's hero suit.
Studios: MADHOUSE
Source: MANGA