JoJo's Bizarre Adventure: Season 3, Episode 7

3 - 7: Toshikazu Hazamada (Show Off)

Josuke and Koichi get info that a student at their school, Toshikazu Hazamada may be a Stand user and decide to look into the case. Their suspicions are quickly confirmed after Hazamada's wooden doll morphs into an exact copy of Josuke, and attacks them.