Withered Tree, the Adventures of Monjiro(1972)

Withered Tree, the Adventures of Monjiro is a samurai film following Kogarashi Monjiro, a lone swordsman who sacrifices his freedom by confessing to a murder he didn't commit. His plan is selfless: allow his friend to remain at his dying mother's bedside, with the understanding that a confession will come once she passes. Sentenced to a brutal island prison, Monjiro's hope crumbles when he learns his friend's mother died over a year ago—and no pardon is forthcoming. Betrayed and consumed by rage, Monjiro joins forces with fellow inmates to orchestrate an escape and pursue vengeance against the man who abandoned him. A tale of honor, sacrifice, and the cost of misplaced loyalty.