One Punch Man: Road to Hero

In the early days, when Saitama started out as a weak hero, he didn't have much money, and so, in order to keep clothed, he relied on a nearby tailor to fix his clothes as they got damaged in fights.

One day, when the tailor got extorted by yakuza, Saitama decided to step in to help him.

Note: Bundled with the tenth edition volume of the One Punch Man manga.