Spiritia is only vaguely defined as life energy common to all living beings in this universe. It became known to humanity when a race known as the Protodeviln began extracting spiritia from humans by force. Since the Protodeviln were from a parallel universe, they required spiritia from native live forms in order to continue to exist in this universe. Certain individuals, known as Anima Spiritia, can generate a pure form of spiritia that cannot be absorbed.