The appearance of unknown demons forced superhuman exorcists to reveal their unique existence to the mundane world. Izumi is a superhuman with a dark background. With mysterious entities dwelling within her, she withdrew herself from the society. To this day, Izumi is still haunted by the memories of her past. But as fate would have it, everything changed when she meets the man who would drag her back to the life she was trying to escape. Together with her newfound friends, they throw themselves into the brewing battle between exorcists and demons.