Several years have passed since the Walpugis Night incident and several bizarre serial cases have occured in the metropolitan area. Dead bodies of couples are discovered during sexual intercourse. The women didn t have any external injuries, but the men were completely burned and carbonized except for one part... their genitals. A special detective team called Tokken is deployed to solve these bizarre incidents. Included amongst the members of Tokken is Imari who had experienced the events of Walpugis Night. While investigating the incident, they found a mysterious phrase, Spear of Longinus, and a strange cult group that is related to the incidents.
