In the World of One Piece, Starting My Sign-In on Sky Island

After transmigrating to the world of One Piece, Roy unlocked the Sign-In System. All he had to do was sign in each day to effortlessly grow stronger and become the Pirate King!

From then on, the protagonist traveled to one sign-in location after another: Skypiea, Loguetown, Fish-Man Island, Marine Headquarters, the Holy Land of Mary Geoise...

And each time, he received another world-shaking, god-tier reward: the ultimate Six Powers, the Three Types of Haki, the swordsmanship of a master swordsman...

This novel and its characters are entirely fictional. Any resemblance to actual persons or events is purely coincidental. Do not imitate.