This is the story of a boy who traveled through time to a Celestial Dragon slave in the world of One Piece, and obtained the King System. After completing the tasks in one world, he can travel to the next plane. As a result, the boy traveled through countless worlds and created eras of kings.
The world traveled through: One Piece is being serialized - Naruto has not been opened - Fairy Tail has not been opened - Sword Art Online has not been opened - Dragon Ball has not been opened - The final chapter of the King Chapter
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
