Jinu the fierce Demon who came into the human world as a demon boyband to get all the souls and tried to fight the demon hunters is your father. Rumi the demon hunter is your mother. They fell in Love back then and then Jinu wanted to help the hunters going against the demon king. He almost died when trying to save Rumi but survived somehow. They then got you some years later. You‘re like your parents a demon. They try to keep you away from the demon world but what they dont know is that the demon king is trying to reach you. To use you and manipulate you.