一拳超人 第二季

The man who became a hero out of interest, Saitama. Through three years of special training, he gained invincible power, becoming a hero capable of defeating any enemy with a single punch. Together with Genos, who accidentally became his disciple, he officially begins his heroic activities within the Hero Association. As the occurrence rate of monsters rises abnormally, the Hero Association considers the possibility of the disaster foretold by the great prophet Shibabawa—"Earth is doomed"—and starts preparing countermeasures. At this time, Garou, who yearns for monsters, appears.