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November 15, 1867 (Keiō 3, 11th month, 15th day)
Ōmiya inn, Kawaramachi-dōri, Nakagyō-ku, Kyoto (near Takonokushi-jinja)
Forces
Victims
Assassins (identity disputed)
About 8 min read
On the night of November 15, 1867—barely a month after the success of the Taisei Hōkan (Great Return of Rule) on October 14—Sakamoto Ryōma was struck down by assassins at the Ōmiya inn in Kyoto's Kawaramachi district. He was thirty-three years old. The man who had conceived of a bloodless revolution, brokered the Satchō Alliance, and drafted a constitutional blueprint for the new Japan died without seeing the dawn of the era he had designed.
Born on November 15, 1835, to a gōshi (lower-ranking samurai) family in Tosa Province (present-day Kōchi Prefecture), Ryōma studied the Hokushin Ittō-ryū sword school in Edo and achieved the rank of head instructor's assistant by 1858. In 1862 he deserted Tosa domain and became a rōnin, entering the tutelage of naval reformer Katsu Kaishū. His greatest achievement was the Satchō Alliance of January 21, 1866, which united the traditionally hostile domains of Satsuma (Saigō Takamori, Ōkubo Toshimichi) and Chōshū (Kido Takayoshi, Takasugi Shinsaku) against the shogunate.
In 1867 he drafted the "Senchū Hassaku" (Eight-Point Plan Composed Aboard Ship), calling for the return of power to the Emperor, a bicameral legislature, reform of unequal treaties, and a new monetary system. On October 14, 1867, the fifteenth Tokugawa shōgun Yoshinobu announced the Taisei Hōkan, returning governmental authority to the imperial court—Ryōma's vision enacted.
On the evening of November 15, several men arrived at the Ōmiya inn claiming to be comrades. Without warning they attacked. Ryōma sustained severe wounds to his forehead, skull, right arm, and neck and died that night. Nakaoka Shintarō, also present, survived two days and died on November 17. Ryōma's S&W revolver lay unused beside him—he had been cut down before he could draw it. Witnesses noted that the blow to Ryōma's skull was delivered with exceptional technical skill.
The nature of the wounds—mixing cuts consistent with an uchigatana and a wakizashi—suggests multiple attackers carrying both long and short swords. The identity of the killers was never officially established. The leading theory implicates the Kyoto Mimawarigumi: former member Imai Nobuo testified in the Meiji era that he and colleagues Watanabe Kichitarō, Takahashi Anjirō, and Katsura Hayanosuke carried out the killing. Inconsistencies in Imai's account keep the verdict open.
Other theories include the Shinsengumi (based on the technical quality of the sword cuts), the Satsuma domain (based on factional opposition to the peaceful Taisei Hōkan), and the Kishū domain (motivated by vengeance over the April 1867 Iroha Maru incident, in which Ryōma extracted roughly 80,000 ryō in indemnity from Kishū). None has been definitively proven, making this Japan's most famous historical cold case.
Ryōma was a skilled practitioner of Hokushin Ittō-ryū, yet he famously embraced the Western revolver. After surviving the second Teradaya incident (1866), when he escaped shogunate agents by firing his pistol, Ryōma habitually carried a Smith & Wesson. This reflected his ideology: he believed the age of the sword was ending and the future belonged to firearms, diplomacy, and commerce. The irony that this gun-carrying visionary was killed by blades before he could draw his pistol is not lost on students of the era—it encapsulates the bakumatsu in miniature, an era in which sword and gun coexisted in violent tension.
Ryōma's name grew larger in death than in life. Shiba Ryōtarō's novel Ryōma ga Yuku (1962–1966) cemented his status as a national icon. The statue at Katsurahama beach in Kōchi (erected 1928) remains one of Japan's most visited monuments. Ryōma was assassinated on his birthday—November 15—an uncanny coincidence that deepened the mythic resonance of his legend.
From the perspective of sword history, Ryōma's assassination symbolizes the dual nature of the blade in the bakumatsu: the dreamer of a new Japan, who had already placed the pistol above the sword, was ultimately cut down by the weapon he had sought to transcend. This foreshadowed the Sword Abolition Edict of 1876 that followed the Meiji Restoration he had helped bring about—the moment when the Japanese sword definitively passed from tool of war to object of art and cultural heritage.