Once one of ancient Japan's most honored families, the Takahashis were decimated in battle. They lost everything. Including the emblem of their power: the revered sword, Sento. Those who survived joined the Bakuto, a predecessor of the Yakuza, for its protection. Five centuries later, Kenshi is raised on the stories of his ancient family's exploits. Detesting his corrupt Yakuza life, he pines to free the Takahashis from the Yakuza's grasp and restore their name.