A single man arose to face the evil threatening humankind! His name was Saitama. He became a hero for fun!
With one punch he has resolved every crisis so far, but no one believes he could be so extraordinary strong. Together with his pupil Genos (Class S), Saitama has been active a hero and risen from Class C to Class B.
- In the Viz Media Volume Release, there have been some changes in the chapter numbering: