Demon Dean X Reader TRAPPED

Being a hunter is tough. But with the help from your good friends Dean, Sam Winchester and the angel Castiel things are easier. One day Dean dies, leaving you devasted. Then things turn weird. Castiel and Sam can't find Dean's body. They go out trying to find out what happened to the body as you stay in the bunker. You hate being alone in the bunker but it about to get worst. The bunker goes on full lock down and you are trapped with no way out. To make matters worst it turns out Dean is alive and now he is a demon. He is trapped in the bunker with you and decides hunting you down is first thing to do on his list.