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 he can defeat any opponent with a single punch, lately he feels as if, in exchange for overwhelming power, he's lost something even more important. Written by Minhaj

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 disciple of Saitama and learned about the power of saitama's punch on a training session. Written by Imtiaz_Emu

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 whats going on.

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.