The war between the Iga and Sanada ninja clans is heating up, and a prominent gunsmith is on both clan's radar. Shinsuke Kakei, the gunsmith, is essentially a pacifist, but believes his weapons can bring peace to the land if put in the hands of the right group. Kasumi is sent to convince Kakei to come and work for them, and keep the guns out of the hands of the Iga. Of course Hattori, along with his sister Sayuri, have other plans for Kakei and his wife.

Mei Itoya
as Kasumi

Mari Hida
as Osawa

Yoko Satomi
as Sayuri

Jako Amano
as Busu Manji

Hiroharu Maeda
as Hayate

Masato Takaoka
as Mufuu

Yuuki Yoneyama
as

Tatsuo Wakabayashi
as Hanzo Hattori

Kenji Tominaga
as Ranmaru (Second-generation Hanzo)

Tetsuharu Konno
as Oni Manji