is a Japanese television jidaigeki or period drama that was broadcast in prime-time in 1972 to 1973. It is based on series of Nemuri Kyōshirō novels by Renzaburō Shibata. Masakazu Tamura played the role of Nemuri Kyōshirō. Tamura's older brother Takahiro Tamura and younger brother Ryo Tamura appeared as a guest in the episode 6. Five special editions of the drama were produced later also Tamura played the role on the stage in 1973 and 1981. The complete DVD box was released on April 10, 2019. The original soundtrack was released on August 11, 2021.

Plot

Set in the eighteenth century, during the reign of the eleventh Tokugawa shōgun Tokugawa Ienari. Nemuri Kyōshirō is a master of the sword, but he is a man who shuts his mind and heart because of his unhappy background; Kyōshirō's father was a Dutch missionary and his mother was the daughter of Matsudaira Mondonoshoū, the Tokugawa shogunate's upper superintendent officer. He was an unwanted child and Kyōshirō's mother killed herself soon after Kyōshirō`s birth.) Although he hates being involved with incidents and people, he is always involved in them no matter where he goes. Some people challenge him to a duel to see his unusual Engetsu Sappō (Full Moon cut) sword style, while others try to use him because he is a half-breed. He solves incidents with both his intelligence and his Musō Masamune sword.