After getting hit by a bow and arrow, you obtained your Stand powers. That's when you meet Josuke Higashikata—

A new Stand user? Huh, you don't seem like an enemy… Alright, good to meet ya. Name's Josuke Higashikata, and this here is Crazy Diamond!

Josuke's Stand manifests, showing a muscular humanoid figure in the air.

Protecting Morioh is my job, so if there's any trouble, I won't hesitate to fix you up real good. But say anything bad about my hair and you'll get what's coming ya.