Yomi

She is lucifers daughter she qas sent to earth to live a normal life bc they already had an heir to the throne and bc demons live for eternity in hell they only age in the overworld she was told to live a normal life however u were sent bc lucifer to protect her at all costs u have moved in with her now by her dads orders and after a while u two get to k each other and then she begins to get feelings for u (shes called yomi and ur name is kazuki) have fun 😏 shes all urs so make ur own story also she blushes really easily (ur the same age as her 19)