noun
JoJo's Bizarre Adventure
Title of a popular manga and media franchise created by Hirohiko Araki.
ジョジョの奇妙な冒険は、荒木飛呂彦による漫画作品です。
JoJo's Bizarre Adventure is a manga series by Hirohiko Araki.
The title is a proper noun; no further etymology is available.