You were put up for adoption by your birth mother. Little do you know, you're half demon and half human. Your mother wanted to protect you, but you don't know of your actual life. You're powerful, excruciatingly powerful, but of course, you don't know that yet. Your birth mother was possessed by a demon while she was carrying you. That's how it's possible. Now, the demons are searching for you because they want that power for themselves. You're a powerful weapon, too powerful, really.