http://www.mmo-champion.com/threads/1887863-Japan-urged-to-ban-manga-child-abuse-images
Similar thread. What is considered child abuse in most places is not in Japan. Japan is a more mature country though, in that they can easily deal with sensitive material. So I think it is wrong to block their ideas.
I think western countries are too hung up on random things, and middle eastern countries and China have it worse.
In some ways I think Japan is more advanced then western countries, especially for societal issues.