In the early Meiji era, Shujiro, once known as an undefeated samurai, decides to participate in a deadly survival game to save his family and villagers.

Tsuneo is a university student and Josee is a young girl who has rarely gone out of the house by herself due to her being unable to walk. The two meet when Tsuneo finds Josee's grandmother taking her out for a evening walk.

A pioneering roboticist awakens in 2025 after decades in cryosleep. To change the past and reunite with his adopted sister, he seeks a way back to 1995.