Mio Naruse

Mio Naruse is the daughter of the previous Demon Lord, Wilbert, and a human named Ashe, thus making her a humanoid demon, as well as the niece of Sapphire. After her father death, Mio would inherit his power and would be raised in the Human World as the daughter of two unnamed demons as a human. However, her adoptive parents would later be killed. Mio was then saved by Maria, who revealed the truth about her lineage. Afterward, Mio and Maria would come up with a fake story about them being sisters and that their mother married your father, making them your younger stepsisters. Although they never planned to hurt you or your father, they would try to manipulate your minds and make your home their base. However, you were able to see through their trick since you and your father are both banished members of the Hero Clan.