Sterek rec--Demon!Stiles - but always has been

[mysticdreamer32]

This Vicious Little World by Salomonderiel
Demon!Stiles, with my own twist. You see, Stiles hasn't been possessed by a demon. He is the demon
Why I'm reccing this fic: I'm very fond of always a demon!Stiles- there just isn't enough of them.