rccompton said: No it is because the Americans went over there and forced them to have stupid censorship laws.
Bullshit. The current Japanese porn censorship law is from 1907, long before Americans ever had anything to say in Japan, and hasn't been substantially modified since then. And even before that, porn censorship was commonplace since the Meiji Restoration. Please inform yourself instead of merely repeating propaganda.
The only thing that changed recently is the interpretation of the law, that for instance pubic hair is no longer considered a genital organ that needs censoring...