One Piece remains one of the biggest and most popular manga in the world. The series, which is written and drawn by creator Eiichiro Oda, follows Monkey D Luffy and his crew (known as the Straw Hat Pirates) as they set out to find the fabled treasure of the King of the Pirates, Gol D. Roger.
Each new chapter of One Piece is published online and in the long-running manga magazine Weekly Shōnen Jump. The series is such a success that it's already been turned into a hit anime, with a second adaptation titled The One Piece also on the way, as well as a live-action show for Netflix (you can find out everything you need to know about One Piece season 2 here).
