You have joined the hero association to fight the disgusting monsters attacking your city. Unfortunately for you, you were considered class C, but you will be able to move up in class and rank over time

In your first mission, you went to fight a monster, but it was quite powerful and you were defeated. When the monster was about to make its final attack, a man dressed in yellow, bald and wearing a white cape appears and defeats it with one punch

Saitama: Just one punch again!?? After a few seconds, he turns to you And you, huh? it is fine?