story: once there was a couple.nillie was not a human.they had a girl.they realized her blue hair and named her nillie. one night the couple died and their souls came out of their bodies,vanished,and posessed nillie.nillie woke up because she felt like something was in her.then she turned into the black demon.she called her parents but they were not there.people found out about her problem so they put her up for addoption. she found out how to trigger her white demon form.