For some reason, Saitama, Teacher from the world of One-Punch Man, transmigrated into the world of One Piece.
In this colorful world, where evil lurked around every corner,
the existence of heroes brought light to ordinary people.
Justice will be served!
Whether they're pirates or marines,
anyone who does evil must be punished!
World One: One Piece.
World Two: Dragon Ball.
World Three: My English Academy.
World Four: One-Punch Man.
Re:Zero, The Rising of the Shield Hero, and Naruto will open up one after another...
(Special note: He will transmigrate to other worlds later. No matter the setting, Teacher is invincible.)
