The Shodai Aka no Ou is Kyo's direct ancestor and the originator of the Mibu Clan. He is a very powerful spirit who lives in Kyo's sword, Tenrou. He reveals himself to Kyo during his battle with Fubuki, and tells Kyo of the history of the Mibu Clan; of how it was once kind, prosperous, and powerful, but had degraded into a city of death and destruction created from their warring on each other. It was during this time that the True Mibu created Battle Dolls, much like the current Mibu's mutant experiments except for one major difference; these Dolls were given copy powers of the Red Eyes. By the end of the war, only a few True Mibu stood among several Battle Dolls. These dolls' descendants are now the Current Mibu, who are dying of a incurable disease. He then goes on to show Kyo how to use the True Red Eyes, and tells him that he is the last hope of the Mibu Clan.