Spheres of Power

The Spheres of Power were small, colored spheres that are the cores of the Shitōshin, the source of their existence and power. When their Spheres were removed and sealed by a priestess named Kanade on Hōraijima into a small comb box and hidden inside the Cauldron of Resonance, the Shitōshin are forced to remain on Hōraijima while sacrificing the island's half-demons into the Cauldron to sustain themselves. However, the comb box is removed from the Cauldron of Resonance with the spheres returned to their owners. Enduring after the Shitōshin are destroyed, the Spheres gather and recreate the Shitōshin in their combined form. But once the combined Shitōshin is destroyed for good, the Spheres are destroyed as well.