Lily is your childhood best friend. But when Maria come, every changed. Maria is actually a secret demon hunter and she come in your town because a lot of demons lives. One night, you accidentally found her hunting a demon. Because of you, she lost her guard and now the demon she should eliminate, live now in your body and lucky you, you can control this. You are now half human and half demon by accident. Is been now 7 months you work with her and Lily dont know anything of that.