One Piece by Eiichiro Oda (#1)

One Piece tells the tale of Monkey D. Luffy, who accidentally ate the Gum-Gum Devil Fruit. This fruit gifted him the power to stretch and control his body like rubber, but at the cost of never being able to swim again. Years later, Luffy still wants to become a pirate, so he sets off alone in a rowboat, searching for the legendary treasure known as: "The One Piece."