A young man transmigrates into the body of a Celestial Dragon's slave in the world of One Piece and obtains the King System. After completing the tasks in one world, he can transmigrate to the next plane. Thus, he travels through countless worlds and forges one age of kings after another.
Worlds visited: One Piece, currently ongoing - Naruto, not yet started - Fairy Tail, not yet started - Sword Art Online, not yet started - Dragon Ball, not yet started - Final arc: King of Kings
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
