One Piece: Across the Sea

The male protagonist looked down on everything in the world in the 20th century and accidentally traveled to the world of pirates. He gradually became the strongest man on the sea from a weak ant. He challenged Roger and entered the new world to become the emperor. Finally, he retired anonymously, drifted in the sea, saved Hancock, met Robin by chance, and taught how to fly Ace Sabo... This article does not have a harem, does not have a golden finger in the system, all depends on cultivation and hard work, and becomes the freest and craziest emperor on the sea. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.