One Punch of Justice
Saitama from One Punch Man has unexpectedly crossed over to the One Piece world.
In this vibrant and colorful world lies hidden danger that shall be brought to light by the existence of a Hero and bring justice to the common people.
Whether the perpetrators be Pirates or Marines, all shall be brought to justice!
First World: One Piece
Second World: Dragon Ball.
Third World: To be determined…
(Special note: In the upcoming arcs Saitama will cross over to other worlds, but no matter what world he may be in, he will be invincible!)