In the last decade, One Piece has cemented its place as the undisputed best-selling manga series of all time. The series has sold over 500 million copies, and that time will keep going up for the years to come. One Piece has not only surpassed Akira Toriyama's Dragon Ball, but it has also left Naruto and Bleach in dust. Even the newer titles like Jujutsu Kaisen and My Hero Academia were unable to compete with One Piece.