A MLP: Friendship is Magic x Jojo's Bizarre Adventure Crossover
Set in the Equestria Girls Universe.
Rainbow Dash was content living her ordinary, awesome life. However, when a mysterious new student, Josei Nijimura, arrives at Canterlot High she discovers that she has an ability known as Stand. When the duo stumble upon a peculiar organization present in Ponyville, Rainbow and Josei investigate their actions and must tackle the possible threat head-on.
Possible Gore and Language, mostly from Rainbow Dash