One Punch Man (2015)

Synopsis

Saitama looks ordinary and unimpressive, but has a unique hobby, namely: being a hero. To chase a dream as a child, he trained non-stop for three years — and lost all his hair. Now, Saitama is so strong, that no enemy can defeat him in battle. In fact, all it takes to defeat a villain is just one punch and this causes problems for Saitama — he can no longer enjoy the excitement of fighting and it becomes very boring.

This all changes with the arrival of Genos, a 19-year-old cyborg, who wants to become Saitama's apprentice after seeing what he is capable of. Genos proposes to Saitama to join the Hero Association, in order to become a certified hero recognized by society, and Saitama, is surprised that no one knows who he is. And thus begins the story of One Punch Man.