Gennosuke and Oboro, heirs of the Kouga and Iga ninja clans respectively, wished for the fragile peace between their tribes to endure. However, destiny had other plans, and the lovers were unable to prevent their people from plunging into a war that shattered centuries of harmony. The conditions of the conflict are inscribed on two parchments: one containing the names of the Kouga fighters, the other enumerating those who defend Iga. To eliminate the individuals listed on these scrolls, one must spill blood.