Once upon a time, there was a family that wielded significant influence over the Imperial Court. They possessed a unique power known as "Kidou," yet this very ability made them objects of hatred. Eventually, the family patriarch was trapped and killed, leading to the ruin of the entire clan. In the present day, the surviving descendants, now identifying as the "Kidousyuu," plot to resurrect their murdered patriarch, and a ferocious evil spell is set in motion.