Josuke is a biracial (half-Japanese and half-British) first-year high school student residing in the town of Morioh. In the year 1999, he meets Jotaro Kujo, who informs him that he is Joseph's illegitimate son, making him a descendant of the Joestar Family. After his grandfather dies, Josuke takes it upon himself to protect his beloved town from malevolent Stand Users. Josuke is a Stand User that wields Crazy Diamond, a Stand with the power to repair almost anything.