The Sword of Doom

The Sword of Doom , Daibosatsu Tge? , The Pass of the Great Buddha , is a jidaigeki film released in 1966. It was directed by Kihachi Okamoto and stars Tatsuya Nakadai. It was based on the serial novel of the same title by Kaizan Nakazato.

Through all his interactions, whether killing a man or at home with his mistress and their baby son, Ryunosuke rarely shows any emotion. His expression is fixed in a glassy stare that suggests a quiet insanity.Eventually Ryunosuke learns that the younger brother of the man he killed in the fencing match is looking for him, intent on revenge. He plans to meet this young man and kill him, but before the duel can take place, two events occur that shake his confidence. In a botched assassination attempt, he sees another master swordsman, Shimada Toranosuke Toshiro Mifune, in action, and for the first time he doubts that his own skill is truly unbeatable. That same night, Ryunosukes mistress, horrified by his unremitting evil, tries to kill him in his sleep. He kills her in the gardens, to the ominous cries of their sleeping child inside the house, and flees without keeping his appointment to duel with his pursuer. Later he rejoins the gang of assassins at an oiran house in the Shimabara district of Kyoto. There, in a quiet and he is told, haunted room, he starts seeing the ghosts of all the people he has killed. Further, he is haunted by the words of Shimada The sword is the soul. Study the soul to know the sword. Evil mind, evil sword. The final blow comes when he realizes that the apprentice oiran sent to entertain him is the granddaughter of the pilgrim he murdered at the films beginning. ........

Source: Wikipedia