Strange Shadows

I got this idea a few years ago for a story about evil fairies. It then morphed into this. "Yriafs" as you will see in the story are evil fairies (YRIAF is FAIRY backwards) with demonic origins, including some vampiric influences. I don't know where this story is heading, but I am hoping it will evolve as I go along. Please comment if you like the concept, if it's been done before, any critics, anything about the characters you like or any burning desires you may have for the story.