The "Unperishable Sword" is a story based on the novel by Renzaburo Shibata. A complicated tale with dynamic characters, make this samurai who seeks revenge for the death of his master, not your ordinary revenge story. Also Known As (AKA): Koken wa arezu: tsukage ittôryu, Sword of Destiny, The Thirsty Blade.—japanesesamuraidvd