Untitled drama

Saitama, a man who is a hero for fun. He is a hero who gained invincible power through three years of rigorous training, capable of defeating any enemy with a single punch. Together with Genos, who accidentally became his disciple, he begins official hero activities with the Hero Association. When the Hero Association's executive's child is taken hostage by the suddenly emerging Monster Association, the Class-S heroes gather to plan a raid on the Monster Association's hideout to rescue the hostage. Meanwhile, the human-turned-monster Garou awakens within the Monster Association's headquarters.