VASaya Aizawa (JPN) / Kayli Mills (ENG)

A demon girl who exterminates demons. She has a contract with Shu. Only a few humans know that she is a demon, and she normally spends her days attending high school in Bayron City as a human girl. Even when there is no work, she visits Shu's house which doubles as their office to support Shu both professionally and privately. She is extremely possessive of Shu as she has a contract with him. She hates any woman who approaches Shu, and sometimes even tries to get rid of them...