I found myself on youtube listening to some song covers of Hellfire from Hunchback and I suddenly got this fabulous idea in my head. A half demon girl
has lived her life in peace on the mortal plane with her human mother, her life is turned upside down however when she all of a sudden finds herself being hunted by an angel on the slightly mentally unstable side, this angel arrived at first with the intentions to kill the abomination... but finds himself powerfully infatuated with her. She will belong to him... or she will die...
More details can be worked out, but I prefer to wait to go in any deeper until I have a partner to do this with, that way some of my partner's ideas and such can be added in as well. Makes it more ours than mine and I like it that way :)
I kinda envision something like Gabriel from Constantine the movie, high and mighty with a couple screws loose in the head.
Below is the video that inspired the idea, Caleb Hyles is so talented, I just love his villain covers.