It is the 17th year of the Meiji era. In the imperial capital of Tokyo, a mysterious religious group, the "Eastern Shiten-shu Goshinmin," is closing in on the heart of the Meiji government. Their goal is the resurrection of the man-eating demon, Sutendoji! And the leader of the Shiten-shu, Hoshiro, is the daughter of Ashiya Doman, who has lived for 900 years, fused and in symbiosis with Sutendoji's head! Now, Kurahashi Shizume, a descendant of Abe no Seimei, who fights against these dark forces, is imbued with the power of the forbidden "Iron Ring of Heresy"!!