1. Dark Ocean Society (1881-1946); Black Ocean Society
Wikipedia definition
2. GenyōshaThe Dark/Black Ocean Society was an influential Pan-Asianism group and secret society active in the Empire of Japan, and was estimated as ultranationalist group by GHQ in International Military Tribunal for the Far East.
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Read “玄洋社” on Japanese Wikipedia
Read “Genyōsha” on DBpedia


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