Saitama is a guy who is a hero for fun. After saving a child from certain death, he decided to become a hero and trained hard for three years. Though he's now so strong h ...

Genos, a Cyborg who is seeking Justice fights with a Mosquito Monster along with Saitama. ...

Saitama and Genos track down an evil scientist who wants to know the secret to Saitama's power. ...

A group of Bald thugs use body armors to terrorize rich people. Sonic Speed, a hired ninja fights them. Unfortunately he meets with Saitama who is also a Bald. ...

Saitama and Genos find out about the hero registration and both took the tests to certify. Genos got S(Special) and Saitama got C grade. Meanwhile, Genos became the disci ...

To remain on the Hero list Saitama has to show some activity in every week. Currently the City Z is defined as the 'ghost town'. Heroes are gathered together to find out ...

A giant meteor threatens to destroy City Z. All S-Rank heroes are called to City Z to destroy the meteor before its collision. ...

Several Sea Folk appear and begin attacking citizens. They are easily defeated until The Deep Sea King appears and defeats many heroes including an S-Class. ...

The fight with the Deep Sea King concludes and Saitama and Genos reflect on it as well as Saitama's promotion to B-Class. ...

Saitama and all class S heroes are gathered together to be informed of an imminent extremely danger threat. ...

An alien conqueror lands in a spaceship to conquer the Earth during the S class heroes meeting. ...

Saitama takes on the alien leader in epic battle as the S class heroes fight the alien warriors and destroy the spaceship. ...