I think the biggest problem with Japan is that they have never apologised for their soldiers actions. Germany did inasmuch they accepted the wrongs of the Holocaust and the Swastika is a prohibited symbol.
Chinese womenhood had a bad time in the 20th Century what with the end of the Q'ing Dynasty and numerous civil wars and invasion by Japan. It continued during the post war civil strife and one thing that the women's branch of the Communist Party demanded was that rape be written into the Constitution as a capital offence.
It still is.