JoJo no Kimyou na Bouken Part 8: JoJolion

In 2011, childhood friends Yasuho Hirose and Joushuu Higashikata discover a naked man buried in the ground just outside the town of Morioh. The man has no memory of his name or previous life; the only thing he remembers about himself is how to use his Stand, a supernatural ability that takes the form of a humanoid creature. The stranger is quickly given a name, Jousuke, and Joushuu's father Norisuke decides to adopt him into the Higashikata household until he can find his own home.

As Jousuke begins to investigate his past, it becomes apparent that he is no ordinary amnesiac. There is much more to his identity than he first suspected, and, as he is thrust into a series of high-stakes Stand battles, he soon begins unravelling a deadly conspiracy that encompasses the entire town.