There was a family long ago who wielded great power within the Imperial Court. Their strength, known as "Kidou," was both revered and reviled. Tragically, the patriarch of the family was eventually ensnared and killed, leading to the downfall of their entire clan. Today, the surviving descendants of this family are known as "Kidousyuu," and they have been working tirelessly to raise their murdered leader once more. Their efforts have summoned an ominous and fearsome spell, ready to be unleashed.