What the hell is up with the Japanese obsession with rape.
To be fair, I don't think it's got all that much to do with Japanese culture. I think they just tend to be more open about it. 10 seconds with Google will show you that rape fantasy porn is quite common ("rape porn" gets over 2 million hits). And a look through a couple sites specializing in erotic literature shows that rape fantasy stories are quite popular there, as well - both men fantasizing about raping women, and women fantasizing about being raped.