The Hong Kong-filmed Black Sun 731 is set in wartime Manchuria. Shiro Ishii portrays a Japanese scientist conducting inhuman lab experiments on human subjects. He is confident that such suspect surgical procedures as removing organs from live patients and exposing others to dread diseases is all on behalf of the war effort. Based on information uncovered in 1984, the film claims that these medical atrocities were conducted under secret orders from Emperor Hirohito himself. Black Sun 731 has also been released as Hei Tai Yang 731 and Men Behind the Sun.
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