The One Piece Clothing store offers a wide variety of shirts, pants, and jackets in a variety of colors, styles and sizes. One Piece is a manga series by Eiichiro Oda created in 1997. The series follows the adventures and experiences of Monkey D. Luffy, a teenage boy who gained superhuman strength from eating a magical Gum-Gum fruit. The main character is followed on his quest to become king of the pirate “one piece” and explore the Grand Line, an expansive ocean that crosses the entire world.