Sana is the daughter of the high priest who oversees the school responsible for training Mao, Hyakka, Kumon and Shiranui among other powerful onmyodo practitioners. Seemingly the sole female in a temple filled with men, she is an object of quiet desire for many of the pupils though only a few have been able to gain her attention. Mao pined for Sana silently and seemed to win her attention when her pet cat, Haimaru, allowed Mao to pet him, something only Sana had ever been allowed to do.
While Sana seems aloof from the daily work of the temple, in fact she is used by her father to enact powerful curses. At night while she sleeps her father is able to draw powerful curses from her mouth which he casts into spells and sends off through his underlings to craft deadly sutras. Sana seems unaware of this, though she too has her secrets from others. She has an infatuation with the earth-wielder Daigo who she would meet in private corners away from prying eyes.
Eventually her cat, Haimaru, was stolen from her and crafted into the powerful demon Byoki. When Byoki broke free he massacred everyone and in his battle with Mao Sana was killed. Mao was blamed for her death and has been hunted for centuries by the immortal survivors of the slaughter. With master and heir dead the once great temple was utterly destroyed leaving its esoteric teachings to become the stuff of legends.
(Source: furinkan.com)
