The Samurai and the Prisoner

This movie is "The Samurai and the Prisoner" and story line : When Lord Murashige rises up against the tyrannical Oda, he finds himself besieged within the walls of his own castle. Isolated, he is confronted with a series of mysterious crimes that shatter the fragile order of his court, forcing him into an uneasy alliance with Kanbei Kuroda, a brilliant yet dangerous strategist held prisoner in the dungeon..