A film based on Japan's infamous Unit 731, a covert biological and chemical warfare research and development unit of the Imperial Japanese Army during World War II, is facing severe backlash in China. The movie's historical reenactments and portrayal of delicate wartime events have drawn widespread criticism from Chinese audiences. The release date and further details are yet to be specified.

In Japan, reactions may vary from supporting freedom of artistic expression, to serious concern about the issues of glorifying or downplaying war crimes. This controversial topic touches on a substantial part of Japan's wartime history that remains a sensitive issue, and the film's reception may reflect current public sentiment towards these historical events.

In the US or EU, films based on similar controversial historical events receive varying reactions; some are critically acclaimed for their historical accuracy, while others face controversy depending on their portrayal. Freedom of speech and artistic expression is a respected right, although it goes hand in hand with social responsibility.