I first discovered this genre years ago on the web when I found a clip of Rei Himekawa doing a masturbation scene from "I'll Let You Be My Pet"(pretty sure that's the title- in it, the guy is on the floor jerking off). I realized right away this was so unlike most Western scenes where the women generally delicately rubbed themselves and emitted a few fake groans. This was raw, and she was really into it. From that time on, I have been hooked on JAV and periodically try to analyze why. There have probably been discussions like this before, but it would be interesting to hear some ideas from other members. Is it because many of the women have real bodies instead of surgically enhanced figures like their Western counterparts? Or, they have an innate sexuality that Western stars do not possess? What is it- is it even definable? I'm sure each has his own idea of JAVs appeal. I might be fun to explore this.