It is true that there are few birth at the end of some JAV pregnant movies, but only one to be notorious enough that circulated the most around the internet, which got the most attention. This movie is responsible for putting some form of regulations in this form of production in Japan, which is why either this practice has become underground or the producers of pregnant JAV don't want to deal with the hassles from the regulation board. I am a pregnant JAV aficionado and I pretty much seen most (if not all) pregnant JAV movies out there. Recently I visited Japan to see if I have missed anything that I couldn't get hold of from online or else outside of Japan but sadly there is nothing I could find that I haven't seen before in stores and they are mostly just regular pregnant stuff. I know I definitely missed few places to visit but I will go again soon. What happened is that the Japanese government ante up the regulation for pornographic depictions in their latest updates on censorship, which also include drawn materials, such as, hentai manga, hentai anime and anything else related to hentai. The pregnant related videos are mostly just hardcore fetish that does not have any high demand for birth, unless it is exclusively produce for some other form of distribution. If there are no profit to be had, then it won't be produced!
There were also death of JAV actress (Yoko Ishino, I think that was her name), who was apparently 9month pregnant (one of her famous movie was where at least 12 guys came inside of her while she was 9months pregnant…it was uncensored, too). She died while shooting a scene where she had sex with 5 guys. No one knows exactly what happened as this is still under investigation, but people think that they were trying to shoot porn scenes while she was on labor (such as bukkake or other form of light sexual related act while she was giving birth). She died of heart attack! So yea, you can see why this is not safe as Japanese porn director and producer have to put safety above anything else because of the regulations.
Another thing I also heard but it is mostly hearsay is that there are underground exclusive clubs where people pay hefty price to see pregnant women give birth on stage but they are once again just rumors as no one has any proof of that. But I guess people can't have proof when video cameras or anything related to video cameras are forbidden in those clubs.
Anyway, sorry for writPost too long. Click here to view the full text.