In 1970, famed author Yukio Mishima and one of his followers committed public seppuku at the Japan Self-Defense Forces headquarters after an unsuccessful attempt to incite the armed forces to stage a coup d'état.
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His second, a 25-year-old named Masakatsu Morita, tried three times to ritually behead Mishima but failed; his head was finally severed by Hiroyasu Koga.
Secession, argued James Henry Hammond of South Carolina, reminded him of "the Japanese who when insulted rip open their own bowels."
The beginning of the game references the rebellion of Akechi Mitsuhide at Honnō-ji Temple, where the historical Nobunaga died by committing seppuku.
The most recent kaishakunin of the 20th century was Hiroyasu Koga, who beheaded the novelist Yukio Mishima during Mishima's seppuku.
The clan’s fortunes went into eclipse when Ōoka Tadashina (1667–1710) so displeased Shogun Tokugawa Tsunayoshi that he was exiled to Hachijojima and Ōoka Tadafusa (1650–1696) was forced to commit seppuku for killing a retainer of the Shimazu clan in a brawl.
Their band name was inspired by the self given death of Japanese author Yukio Mishima who, after a failed coup d'état, committed suicide according to ancient Japanese tradition (seppuku or hara kiri) as a gesture of public protest.