Motoe Kurose

Kuroe's older sister and only known surviving family member. She suffered from an unknown disease and since she was the only woman that Kuroe truly "loved" he would often skip school just to visit her. She disappeared one night in the hospital when a vampire abducted her and blinded the pursuing Kuroe whose eyes gained certain abilities of their own once they had healed. Kuroe believes that his sister is still alive and thus became a vampire hunter in hopes of finding her. (Source: Wikipedia)