In the third installment of Yoshikawa's novel Musashi, things continue from the 2nd film at the end of battle, where Miyamoto continues on a mission of learning; with the introduction of his arch-rival Sasaki Kojiro; and lastly the large cast of characters rendezvouses for a fateful finale.

• Toei Company
• Kinnosuke Nakamura
• Wakaba Irie
• Isao Kimura
• Chieko Naniwa
• Mitsuru Takeuchi
• Kusuo Abe
• Michiyo Kogure
• Satomi Oka