Demonmaidreader Stories

Y/N is a Cat demon. She was in the woods until she meet Ciel and Sebastian. They asked her if she has a place to stay which Y/N answered with a no. Ciel made a a small deal with this girl. If she works for him she could stay at his manner. Of course the girl said yes. Yes I know she's a demon but she can still die. There are other demon's and grim reaper who could try and kill her. After a couple of months Y/N and Sebastian started to be more then friends... You could say lovers... But what happened if someone tries to steal Y/N. What will Sebastian do...