The last Japanese soldier in 16 years who survived

The government in Edo era is suffering from a financial crisis. It hires "Kage" to provoke the collapse of small hans (prefectures). "Kagekari" are people who were hired by Daimyos (mayors of local governments) to resist kage. The young mayor of Suwa Takashiwa, Tadamaru was assaulted by a kage on his way to Edo. Zyubei and Gennnosuke, the Kagekaris, try to carry injured Tadamaru to Edo.