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. (February 2017)
Takechi Zuizan (武市 瑞山, October 24, 1829 – July 3, 1865), also known as Takechi Hanpeita (武市 半平太), was a samurai of the Tosa han during the Bakumatsu period in Japan. Influenced by the effects of the Perry Expedition, Takechi formed the Tosa Kinnō-tō (土佐勤王党, Tosa Imperialism party) which was loyal to the Sonnō Jōi (尊皇攘夷, "revere the Emperor and expel the barbarians") movement. The infamous Hitokiri operated under the auspices of this party, and Hanpeita used the phrase "Heaven's punishment" (天誅, Tenchū) to refer to their killings. The Kinnō-tō killing of Yoshida Tōyō on 6, May, 1862, led to Sonnō Jōi becoming the prevalent philosophy of The Tosa Han. Takechi became a central figure of the Sonnō Jōi movement in Kyoto and Edo but following the Coup of August 18 1863, he was imprisoned by the order of the former head of the Tosa Domain Yamauchi Toyoshige. Following an imprisonment of 1 year 8 months and 20 days, he was ordered to commit seppuku which marked the end of the Tosa Kinnō-tō. He was survived by his wife, Takechi Tomiko.