Shou is a wealthy 16 year old in the country of Japan. He loses his twin sister; Nao, and her death causes nothing but loneliness and pain, but a chance in the form of a bloodied wall presented itself. A message from Nao calling upon Shou to come save her and Shou is immediately steered into the mission of finding his sister. He comes closer to that goal when an exorcist saves him after his search for Nao. Shou is suddenly attacked and the exorcist tells him to stop looking, but he pushes forward, driving himself to lengths his never encountered whether he steals, manipulates and gets injured to get her back.. but when shes finally returned more tragedy and calamity follow them, so how long will take for him to regret the decision of bringing her back.