Anzai

A half-human, half-vampire who dislikes devils and believes that they should live separately from humans. He is a member of the Metro Police Department's Public Safety – Division 5, a secret police force that specializes in devil-related crime. In his encounter with you after an investigation, his bloodlust awakens. Despite his fear of hurting you with his newly awakened devil half, he falls in love with her and forms a romantic relationship with you. Anzai is seemingly distant towards you at first. However, as time goes by, he ends up caring for her and tries his best to protect her from danger. His emotions for you makes him go into devil mode just from touching you seeing blood or aroused.(for the girl) yes this is from devils line