The forces of the God of Light and the Goddess of Darkness have waged a ruthless war across the land of Toyoashihara for generations. But for 15-year-old Saya, the war is far away and unimportant--until the day she discovers that she is the reincarnation of the Water Maiden and a princess of the Children of the Dark.

Raised to love the Light and detest the Dark, Saya must come to terms with her heritage even as she tumbles into the very heart of the conflict that is destroying her country. The armies of the Light and Dark both seek to claim her, for she is the only mortal who can awaken the legendary Dragon Sword, the fearsome weapon destined to bring an end to the war.

Can Saya make the dreadful choice between the Light and Dark, or is she doomed--like all the Water Maidens who came before her...?