I can't imagine how incensed my grandfather would be, a WWII POW/slave of Imperial Japan, if he saw they were still using that flag. I remember how mad he got when his daughter was driving a Mitsubishi. I had a close friend in college who was from Hong Kong and he harbored a lot of hatred towards the Japanese, I tried to tell him because of what my grandfather went through I had something similar and that you shouldn't hold that against Japanese people that were not involved in that, but the Chinese really suffered, and other Asian countries, as well, of course, he talked about how his great uncle had to hide among the dead bodies, his grandmother was raped and what really bothered him was they had what he called IOUs that wouldn't be cashed while Americans bought up all their game consoles.
Speaking of Unit 731, the people that worked there were all pardoned, many went on to be respected people at universities and such while being completely unrepentant of their crimes. This flag needs to be banned.