If you loved Miyamoto Musashi III: Birth of Two Sword Style, try Miyamoto Musashi IV: The Duel at Ichijo-ji Temple
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Miyamoto Musashi III: Birth of Two Sword Style
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Miyamoto Musashi IV: The Duel at Ichijo-ji Temple
What they share
Both films are directed by Tomu Uchida, and they both carry the cult, foreign gem mood tags, and they sit in Action / Drama / History territory. If that's the register that drew you to Miyamoto Musashi III: Birth of Two Sword Style, the second film will land in a comparable space — through a different lens.
cultforeign gem
What Miyamoto Musashi IV: The Duel at Ichijo-ji Temple is
You agree to fight seventy-three swordsmen in a single day, arm alone against their school’s finest. Then the man who once called you a cripple arrives to watch, grinning like fate. A director shoots the duel like a storm arriving over harbor.