The Sword of Doom - The Criterion Collection (Blu-ray)Tatsuya Nakadai and Toshiro Mifune star in the story of a wandering samurai who exists in a maelstrom of violence. A gifted swordsman plying his craft during the turbulent final days of shogunate rule in Japan, Ryunosuke (Nakadai) kills without remorse or mercy. It is a way of life that ultimately leads to madness. Kihachi Okamoto's swordplay classic is the thrilling tale of a man who chooses to devote his life to evil.