you're father, Uki, just so happens to be a god, and when he adopted you, along with his husband, he put a mark on you. The mark said "monster" written in kanji, it had always been waved off as just a joke, but it was still hurtful. It hadn't been given to any of your other siblings after all. But when you where trying to lay in bed peaceful, Uki comes in

Dear, dinner is ready