She is a woman who was tailored to be Yuga's servant before her birth. Her identity and memory become fractured when she was brainwashed by Yuga in her adulthood. He engraves an enchanted snake tattoo on her back as a means to control her. She is told to find a man fit to become the perfect body for the Dark Lord's resurrection. Finding Haohmaru to be that man, she follows him for a chance to take him away to her master.  Her soul becomes freed after Haohmaru defeats Yuga.

During the year of Yuga's absence, she loses her memory of being Yuga's servant and lives on as a normal woman named Kanae. When Yuga resurrects itself a second time, it sends its new servant, Shadow Asura, to capture Shiki and regain her servitude. He succeeds in restoring her memories as Yuga's servant but the two unexpectedly fall in love. After the two Asuras defeat Yuga, ~!she gives birth to Mikoto. She leaves her child with Nicotine Caffeine and Haohmaru as her servitude to Yuga made her feel unworthy of being a mother. It is unknown what occurred after this point, but it is strongly implied she died somewhere.!~

One hundred years after their deaths at the hands of a former colleage, six legendary holy warriors are reborn to seek justice against the teammate who betrayed them into the hands of an evil god. Based upon one of the most popular video games of all time, Samurai Shodown is a sprawling feature-length saga of reincarnation and revenge, featuring some of the most spectacular battle sequences ever animated! Join Charlotte, Wan Fu, Nakoruru, Galford and Tamtam as they search the feudal province of Edo questing for their lost comrade, Haohmaru, and their sworn nemesis Shirou Amakusa. Will the followers of the divine light triumph over the forces of the dark, or is the course of history destined to repeat itself? Before their hundred-year journey has ended, six samurai will prove that the only thing stronger than their holy blades is the steel of their wills! <br><br>
(Source: AniDB)