My Little Pony: I'm Not the Demon King

(An attempt at using the world of My Little Pony as the setting.) (This is an alternate-universe story.) (Updates will be very slow because the author is writing two novels at once.) A thousand years ago, the Demon King Shadow Hoof was sealed by the Six Elements. A thousand years later, a soul from another world awakens inside his body. He wants to prove he isn't a demon, but discovers that Friendship is a luxury, kindness is a death sentence, and an explanation is an act of provocation. When he cradles the dead changeling hatchling in his arms and, for the first time, wears the original owner's signature cold smile, Equestria finally understands: true darkness isn't a demon born evil, but a good person driven to the brink. (Contains yandere, cunning, dark transformation, villain protagonist, no redemption, and dark MLP fanfic elements. A friendly warning: there is no love and peace in this story.)