A sly thief penetrates the hollow halls of Kyosho Academy to steal Hyakuhekitou (Hundred Stoned Sword). The combination of the three sacred artifacts justifies the empire's omnipotent power. The leaders will send Kan-u to hunt down these criminals. However, Shibai, Chouryu, Kaku, and Jyunyu believe a spy is hiding in their midst. Will Kan-u and her friends be able to protect the empire?

Hakufu Sonsaku
A young girl blessed with a large chest but a small brain who lives in the country with her mother. Hakufu is a Toushi and, as such, she has a burning desire to beat people up.

Toushi
Owners of ancient jewels containing the spirits of the heroes who tried and failed to unite China in the Three Kingdoms era. Scattered throughout Japan, the jewels have the power to draw out the full potential of those who inherit them. However, Toushi are possessed with an insatiable appetite for battle.

Ukitsu
The strongest Toushi known.

Hyakuhekitou
A legendary sword.

Yuji Shiozaki
Battle Vixens which originally appeared in Japan as Ikki Tosen in Gum Comics and has now inspired an anime series, too. Shiozaki-san (blood type A) also created a series known as Karen, which was serialized in Young Jump.