She is the dragon goddess of Kifune Mountain. She is a very powerful god that the twelve Shinshou including Seimei respect. When Kyuuki and his demons came to Japan, he manipulated Akiko's cousin Keiko to seal her so that he and his demons could hide at Kifune Mountain without interference. Masahiro who used his magic to break the seal later freed her.
She usually appears as a white dragon but later appears as a purple haired woman in her 30's usually telling anyone to call her Takao when she is in her human form.