Teruhi

Princess Teruhi is an immortal Child of Light and the sister of Tsukishiro and Chihaya. She is dispassionate and beautiful, as well as determined to eradicate all the earth gods and the People of Darkness in hopes of cleansing the land so the God of Light may return. She is the primary antagonist of Dragon Sword and Wind Child.

Upon meeting Saya, Teruhi immediately recognizes her true nature, though she does not kill her as Saya is under Tsukishiro's protection and because the Water Maiden would simply be reborn again.