JoJo's Bizarre Adventure (Japanese: ジョジョの奇妙な冒険, Hepburn: JoJo no Kimyō na Bōken) is a Japanese manga series written and illustrated by Hirohiko Araki. It was originally serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump from 1987 to 2004, and was transferred to the monthly seinen manga magazine Ultra Jump in 2005. The series is so far divided into a total of nine story arcs, each following a new protagonist bearing the "JoJo" nickname. JoJo's Bizarre Adventure is the largest ongoing manga series published by Shueisha by number of volumes, with its chapters collected in 132 tankōbon volumes as of August 2023.