Almost one hundred years ago, the final three Ketone, the wolf, the fox and the Phoenix, took battle against the Spirit Teller, a witch that received the Ketone Blade when she traded her unborn child for immortality. It is also said the boy holding the Nine-tailed fox within him was the Spirit Teller's son. The legend goes that the boy with the fox killed her but then went mad after using the Ketone Blade for the fight. However, the girl he loved took away that madness and saved him. She was said to have hidden the spirit of the Six-tailed wolf within her. The Two-tailed Phoenix was said to have bonded with a young man with red hair. This boy fell in love with the Ketona of Light, the only Ketona who was not against the Ketone.