"Diamond is Unbreakable" is the fourth part of the popular manga and anime series JoJo's Bizarre Adventure, created by Hirohiko Araki. Set in the fictional town of Morioh, it follows the story of Josuke Higashikata, the illegitimate son of Joseph Joestar, as he battles various Stand users and uncovers a series of mysterious events. The series introduces unique abilities called Stands, which are manifestations of a person's fighting spirit. Josuke, along with his friends, faces off against the antagonist Yoshikage Kira, who seeks to maintain his secret life while committing heinous crimes. The story combines elements of action, mystery, and supernatural themes.