Oserian Demon 1 by @UtsukushiiNoEnjeru (Aurora Lea Frost)

I've been working on a story line involving this demon. She's an ancient breed of angel. Her skin is impenetrable except by weapons made from the bones of her species. She's a master of magic. She is the last of her breed as her husband became evil and killed everyone who could possibly challenge him. She defeated him by destroying his body and locking his soul within her consciousness. Her species lives 10,000 years on average and she is currently only 1000. There is more to her story, but I don't wish to share too much.