In 1881, Tōyama became one of the founders of the Genyosha, a secret society whose agenda was to agitate for Japanese military expansion and conquest of the Asian continent.The society attracted disaffected ex-samurai, and also figures involved in organized crime to assist in its campaigns of violence and assassination against left-wing politicians.Immediately prior to the start of the First Sino-Japanese War, Tōyama organized the Tenyukyo, a secret society and paramilitary force that operated in Korea prior to the arrival of the Imperial Japanese Army, making detailed topographic maps, scouting out Chinese and Korean military installations and deployment, and arranging for logistic support.Along with Genyosha operatives in Korea and Manchuria, the Tenyukyo provided interpreters and guides to the regular Japanese army after their invasion.Following the Chinese revolution, Tōyama officially retired, and apparently refused to play an active role in the Black Dragon Society (Kokuryu-Kai) that he helped create as a successor to the Genyosha.
Tōyama (left) with his friends, future Prime Minister
Tsuyoshi Inukai
(center), future generalissimo of
Republic of China
Chiang Kai-shek
, commander-in-chief of the NRA (right), and others in 1927 when National Revolutionary Army launched Northern Expedition,
Chiang Kai-shek
required Tōyama and his friend in Japanese government give support to National Revolutionary Army.