One-Punch Man Wiki

"One Punch" (一撃, Ichigeki, Tonari: 1) is the first chapter of the One-Punch Man manga series.


A quiet and peaceful A-City is suddenly disturbed by an enormous blast that obliterates the surrounding area. Standing in the crater the blast left behind, is Vaccine Man. He slowly takes flight, powers up and fires multiple blasts at the city below. The energy blasts destroy the buildings and kill a large number of civilians. Meanwhile, Saitama is at home and watches the news, where the destruction and mayhem are being reported live. Saitama decides to stop it.

Near Vaccine Man, a schoolgirl is seen crying for her parents. Vaccine Man approaches her and seems to lend her a hand, but the hand suddenly transforms into a monstrous claw and reaches for the girl. Luckily, she is saved by an incoming Saitama, who grabs the girl and dashes away from the monster. Vaccine Man asks for Saitama to identify himself and he does, by saying that he's just an average man acting as an average hero. The creature is angered by this and aggressively tells the tale of who he is and where he came from. He transforms into a much larger and much more vicious version of himself and looms over Saitama. Saitama however, is completely unfazed and throws a punch, instantly blowing a hole in the monster, killing it. Realizing that the fight ended with one punch again, Saitama yells in frustration.

Characters in Order of Appearance[]

  1. Vaccine Man (Debut)
  2. Saitama (Debut)

Chapter Notes[]

Online Cover


Volume 1 12345678Extra
Volume 2
Volume 3 1617181920ExtraSpecial
Volume 4
Volume 5 2526272829Extra
Volume 6
Volume 7 353637Extra 1Extra 2Extra 3
Volume 8
Volume 9 41424344454647Extra
Volume 10
Volume 11 565758596061Extra 1Extra 2
Volume 12
Volume 13 68697071ExtraSpecial
Volume 14
Volume 15 7677787980Extra 1Extra 2
Volume 16
Volume 17 858687Extra
Volume 18
Volume 19 91929394Extra
Volume 20
Volume 21 979899100101Extra
Volume 22
Volume 23 107108109110111112Extra
Saitama Introduction Arc
Manga Chapters 1234
Manga Volumes
Webcomic Chapters 1 • 2 • 3 • 4
Fights Saitama vs. Vaccine ManSaitama vs. MarugoriSaitama vs. Super Custom YO649Z Mk. IISaitama vs. Subterranean King