An Intoner is a god-like being that possesses enhanced magic capabilities through the manipulation of magic via Songs. They mostly appear in the form of beautiful, young women branded with numbers on their foreheads. People who can use the power of song to wield vast attacking force. Six of them, all female, have been recorded throughout history. The Intoners freed each land from the despotic rulers that once terrorized their people, and are now worshipped as saviors.
Prior to the arrival of Intoners to the world, they are never mentioned within the annals of history. It is later revealed that the reason for a lack of information regarding Intoners is that they are actually beings created to destroy humanity and essentially, the world itself. The parasitic flower inhabiting Zero had manifested for itself a corporeal host to destroy the world as that had been its sole purpose. Upon realization of what the flower had intended, Zero committed suicide, only to be resurrected by the accursed flower that had also been made aware of her intentions.