One Piece is a Japanese media franchise created by Eiichirō Oda in 1997. The initial manga, written and illustrated by Eiichirō Oda, has been serialized in Shueisha's Weekly Shōnen Jump magazine since July 22, 1997, and has been collected into 111 tankōbon volumes. By December 2023, the manga has sold over 523.2 million copies worldwide, making it the best-selling manga series in history. It became the best-selling manga for the eleventh consecutive year in 2018.