Ōtsubo Katsumoto


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Rakuyama Kensaku (: らくやま けんさく; born 12th July 1935-18th August 1981 aged 47) more commonly known as Ōtsubo Katsumoto (おうつぼ かつもと) was a  who defected from the Japanese  to the Manchurian Shūjìchù. Ōtsubo's defection sparked the October Crisis which resulted in Japan recognising Manchuria whilst Ōtsubo was deported to Japan where he was later executed for treason.

Ōtsubo was born in in 1935. Joining the Naicho in the 1960's he was thought to start spying for the Shūjìchù in 1971, being a sympathiser. Ōtsubo was thought to be the Shūjìchù's highest placed foreign agent, and was thought to pass over important information to the Manchu communist regime. In 1978 Ōtsubo received information that indicated that his cover was blown, subsequently fleeing Japan to Manchuria where he became a on the behest of communist leader Qian Yiu-tong. Ōtsubo's defection led to Japan allies to pace sanctions on Manchuria which in return led Manchuria to issue military threats against Japan in the so-called "October Crisis". War was averted after the signing of the Kojima-Tao Pact which saw Japan recognise Manchuria in return for Manchuria extraditing Ōtsubo to Japan. Ōtsubo was subsequently placed on trial for treason and executed via hanging in 1981.

Early life and career
Ōtsubo was born Rakuyama Kensaku on the 12th July 1935 in the city of, in a middle class family. His father was then serving as an officer in the in  being killed by a  attack in 1937. He attended at the age of 18 where he studied Economics. After leaving university he is thought to have joined the around the 1960's, although exact information of his Naicho career is unknown. Ōtsubo is thought to have been posted in the, and  embassies. It was whilst in South Vietnam that Ōtsubo confirmed in his trial in 1979 that he first became interested in due to  in the.