The Vault

The story follows Sunset Shimmer, who (using her powers) finds out that her friends' memories of her have been mysteriously erased, resulting in them getting am

A vengeful teru teru bozu-like monster called Miden is stealing all of the Cures' magical powers and memories, turning them into helpless infants, barring Nagis

A mysterious man arrives at the offices of an FBI agent and recounts his childhood: how his religious fanatic father received visions telling him to kill people