This is the perfect movie except that brief racism toward the end. The joy in a movie like this is in transgressing boundaries and social mores (in this case through extreme gore and anti-fascist sentiment) but there's nothing transgressive about racism in the least bit. I understand there's a cultural riff but if they knew enough about gaijin to market this to us they know damn well blackface isn't okay.
I remember being at the Toronto premiere, during my brief flirtation with Japanese "gore" movies, and realizing it offered me nothing. It was hardly shocking because it was so over the top, yet it was hardly funny because it was so gruesomely violent, and on top of it all the actual quality of the filmmaking was quite poor. It doesn't deserve this many words.