Onepunchman Giant Meteor Boros Exam Seaweed Speed o Sonic Carnage Crab

HomeOne Punch Man Arcs

Overview Arcs of O.P.M. Picutures of Heroes Hero Rankings Hero Power Levels

*Keep in mind that these arcs are only for the first season of the anime*

Saitama Introduction Arc

This arc introduces the character Saitama, how he got his strength,

and shows what his strength is capable of. During this arc he also recieves

a disciple named Genos.

*These are the chapters of the arc*

  1. One Punch
  2. Crab & Job Hunting
  3. A Dangerous Being

House of Evolution Arc

During this arc Saitama fights mosquito girl, which he kills right away.

He later encounters animals and insects that can talk and fight. They were made by a scientist named Carnage Kabuto.

He sends these creatures after Saitama, but he defeats them all.

He then fights against Kabuto who transformed himself into a monster.

*These are the chapters of the arc*

  1. Itch Explosion
  2. Saitama
  3. Mysterious Raid
  4. You Mean This Guy?
  5. House of Evolution
  6. Modern Art
  7. The Key To His Power

Paradise Group Arc

This arc is about a group of bald guys that hate working and stole armored body suits

that gave them a lot of strength. We meet two new villains in this arc, Speed O Sonic

and Hammer head. Saitama basically shows up and defeat them both, making Sonic wanting

revenge against Saitama in te future

*These are the chapters of the arc*

  1. Paradise Group
  2. Speed
  3. Don't Know You
  4. Hobby & Work

National Superhero Registry Arc

Saitama in this arc, along with Genos, goes into the Hero Organization to take two tests

in order to qualify as working heroes in society. Saitama gets a perfect score on Physical test

, but he gets a 70 on the written test. Genos gets a perfect score on both, so Genos starts

at the S-class, the highest class and Saitama at C-class, the 4th highest class.

*These are the chapters of the arc*

  1. Passed The Exam
  2. Sparring
  3. Business Activity
  4. No Time For This

Rumored Monster Arc

During this arc, Z-city is being investigated. All the cities are named from A-Z. We meet 2

A-class heroes, Spring Mustachio and Golden Ball. They come across a monster that has a bunch of seaweed

around it. It's seaweed is hard and can stretch a long distance, making him a very good long range fighter

*These are the chapters of the arc*

  1. Rumor

Giant Meteor Arc

In this arc a gigantic meteor is heading for Z-city! This could possibly wipe out humanity if it

hits the earth. Genos and Saitama are the only ones who get in between Z-city and the meteor. At first

Genos tries an all out burst of fire at the meteor, but nothing happens. Saitama then steps in and

jumps towards the meteor and punching it, shattering the entire meteor in one punch. Although he prevented

a world extinction, the fragments of the meteor were scattered all around Z-city, devastating the entire city

*These are the chapters of the arc*

  1. Giant Meteor
  2. Voices

Sea Monster Arc

In this arc these creatures who call themselves the "Seafolk" have come to the surface to take over the

Earth. An A-class hero, named Stinger, comes and defeats all of the Seafolk, but is then taken down by the Seafolk king.

A bunch of heroes go out and try to defeat the king, but no one was a match for even the S-class heroes,

Puri Puri Prisoner and Genos! Saitama sees his apprentice on the verge of dying and gets really mad.

Saitama walks up to the king and kills him...IN ONE PUNCH!!!

*These are the chapters of the arc*

  1. Threat From The Sea
  2. Sea King
  3. Glimmer Of Hope
  4. Beat-Up But Shinging
  5. Because It's Raining
  6. B-Class

Aliens Conquerors Arc

In this arc Aliens were forseen to invade the Earth, but oracle doesn't know when they will come

It could happen today, tomrrow, next week, in a month, a year, etc. In order to prepare for this invasion

the Hero Association gathers all of the S-class heroes. Genos decides that Saitama should join the meeting

even though he is a C-class. As they were having the meeting the Aliens coincidently started to invade Earth

Saitama single handedly invades the ship while the other S-class heroes fight outside, below the ship.

Saitama comes face to face with the leader of the Aliens, Boros! For the very first time, Boros is the only

enemy that hasn't died from one punch when fighting Saitama! It takes Saitama 3 times to finally defeat Boros

*These are the chapters of the arc*

  1. S-Class
  2. Great Prophecy
  3. From Space...
  4. Counter
  5. Guys Who Don't Listen
  6. Are You Stupid?
  7. The Powers Of Boros
  8. Crash