Every human whom is a descendant of Dadan are given registered numbers. “D” praises Dadan as the almighty God for thousands of years. The humans registered as Dadanians constantly carry out their mission: to destroy the Satanists. One day, exhausted Ryo comes home. He says he was waiting for rescue in a cave of the mountain. His parents believe his story.  But, Saori knows he went to Himalayas and something happened there. …