STORY

Saitama lived in his apartment in the Z-City Ghost Town by himself. As a child, Saitama often watched superhero shows and dreamt of being a hero. On the second school day of middle school, Saitama reads a health and physical education manual. He does not hear the talk about the two third-year bullies who beat up a freshman who called himself "The Bicycle Commuter" the day before. After school on a rainy day, Saitama watches the news about an ongoing monster incident in Z-City and the increasing outbreak of monsters in the last decade.