Many years ago, there were three separate clans that lived apart to protect their worlds. The Uzikaya Clan(Wolf Clan), The Kuzikaya Clan(Medicinal Clan), And the Kuzaya Clan(Holy Clan). Once every year, The clans would form together and celebrate the Great King Hotoku Kuzaya, who merged the clans in the sacred school Hotoko Angels Academy where three young heirs were taught to fight for the future to come. On the night of the festival, a wildfire broke out throughout the heavenly land(where the Kuzaya's resided to protect the angels and humans.) The most powerful clan, Kuzaya, was murdered only leaving on child alive, Misokura Kuzaya. The land was betrayed by Hotoku's long term enemy, Usagi Koroi, whom saught to destory all the clans and use Misokura's power to envelop the world into total darkness and chaos. He left her alive and led to the increase of the demon blood within her. He had taken her younger brother, Haru, and fled before the rest of the clans could react. Enraged, both the Kuzikaya Clan and Uzikaya Clan fled to the human world where they had created a Special Forces Facility, The Elite Assassins Organization, to help the young heirs continue their training in secret.