Volume 1

 is the first volume of the OnePunch-Man manga series.

Chapter list

 * 1st Punch: One Punch
 * 2nd Punch: Crab & Job Hunting
 * 3rd Punch: A Dangerous Being
 * 4th Punch: Dark Undergrounders
 * 5th Punch: Itch Explosion
 * 6th Punch: Saitama
 * 7th Punch: Mysterious Raid
 * 8th Punch: You Mean This Guy?
 * 9th Punch: House of Evolution
 * Volume 1 Extra

Information

 * Release date: December 4, 2012
 * ISBN: 978-4-08-870701-3