"Clean up what we are exposed to?" I'll have a snicker here.

This bill was never meant to ban hentai. The laws regarding hentai are already pretty specific in Japan. This bill aims do format what social behavior is acceptable in manga and anime that's considered to be mainstream and, by the way, the group that Ishihara wants to be wiped out of mainstream anime/manga product is also the group he would love to see wiped out of the face of Earth.

Namely: gay people.

You heard me. Governor Ishihara happens to be an extreme-right winger who constantly depicts male gay and lesbian people as the scourge of mankind. His homophobic views are very well known. Also, the very same man claims that manga/anime depicting rape murder are aimed to grade schoolers audience in Japan, which is absolutely untrue. That is, dear friends and neighbors, the man who has Tokyo in his fist right now.

To all those interested to read more about it, I present this link:

http://dankanemitsu.wordpress.com/

This should clarify things a bit and probably leave you with a bitter taste and a newfound despise of fanatics in general.