She is quite tall, and has long, bright colored hair, unlike other members of her tribe. Next to her left eye, Mei has a scar, acquired during the days she was being hunted by her own kin.
When Kyou Mei was fifteen years old, she believed herself to be unrivaled in strength. But as the representatives from the other tribes continued to show up one after another, she realized just how low she actually ranked amongst them. The night before the ceremony, while feeling she had no chance of winning, she ran away. When pursuers came after her, while she not being right in the head, she killed seven of the eight. The eighth made her an offer, she could live as long as she dedicated the rest of her life to working for the Kyou Tribe, and never came back to the village. They made her the offer because they had already lost seven skilled members, and it wasn't worth dragging it out, and if they wanted to keep it up they'd have to start asking te other tribes for help. She later, became the leader of the informant group. Somewhere along the line she married and had two children in Qin.
Mei met Kyou Kai in a place called Roubi in the state of Zhao. She told her that the base of operations of the current Shiyuu, Yuu Ren, was at Mount Rou, but warned her about Yuu Ren's use of dirty tricks and enormous strength. Kyou Kai assured her saying that, had she participated, there was no way Yuu Ren would have became Shiyuu. Kyou Mei wished her good luck,as she also wanted revenge for Kyou Shou, since she was still in the village when she was born.
Fearing for Kyou Kai's life, Mei followed her in the forest and arrived at the scene when Kai was already beaten up badly. Seeing her entering a deep dance, Mei feared that Kai would not be able to return to the conscious world and kept calling her name in a desperate attempt to wake her up. At the moment Kyou Kai killed Yuu Ren the remaining members of the Yuu tribe attempted to come to her aid but was cut down by Kyou Mei. She then assisted Kyou Kai in leaving the areas to escape any possible pursuers. Kyou Kai asked her to hide Yuu Ren's body and let the word spread that she wasn't able to kill Yuu Ren whose whereabouts are now unknown. This was to prevent the clan from performing another ritual immediately.
While professing that she was not very highly ranked in her generations' list of candidates for the ritual, she was still skilled enough to be chosen as the Kyou tribe's representative for the ritual. She also managed to slay seven of the hunters sent from her tribe to kill her on her own. Even after aging and switching from an active role to a more passive role as an informant, she was still skilled enough to take down multiple Yuu tribe members who were in league with Yuu Ren before they could even sense her presence.