>>36930661Google it. It's kinda unsubstantiated, but their adult industry is enormous, and a fuckton of women enter into it every year, so it's not totally impossible.
This doesn't reflect on every woman in Japan, mind you, but it does say they're not super frigid like one of the people I replied to claimed.
Also, the bigger problem with low birthrates are that men simply aren't pursuing women like they used to. Look up "herbivore men", a lot of men simply aren't going out of their way to fuck women.
Which is, again, not surprising as marriage is a terrible deal in Japan.