"There is a rotting pillar on the moon... Everything started there..." In the past, there were priestesses of the 'Sun' and 'Moon' who sealed away the Yamata no Orochi after a battle that engulfed the world. And now, in the present... Once again, the nightmare of mythology awakens surrounding the long-held seal! The fate of the world is entrusted to three boys and girls: Kurusugawa Himeko, Himemiya Chikane, and Oogami Soma, who possess the priestess's token!!