Ok it was about a Girl who travels to a new city on either a Vacation or for a job and is living with another woman who turns out to be a demon or Succubus. Its in an underground city if I remember correctly. The human girl is supposed to hide she is a human. The demon turns her into a dickgirl, and cant turn her back. She fools around with the succubus/demon and then goes to a bar and meets a guy she comes home with. They then discover a elf type child in the hallway near there stairs or elevator and there was something strange about the girl/boy they found. It was last year I think. Does anyone remember this one and what was the title?