The Black Dragon Society (KyÅ«jitai; é»é¾æ; Shinjitai: é»ç«ä¼, kokuryÅ«kai), or the Amur River Society, was a prominent paramilitary, ultranationalist group in Japan. RyÅhei Uchida, founder of the Black Dragon Society The KokuryÅ«kai was founded in 1901 by martial artist Uchida Ryohei as a successor to his mentor Mitsuru TÅyama's Gen'yÅsha.[1] Its name is derived from the translation of the Amur River, wh
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