When it comes to Japan's views of sexuality, gender, porn, etc the only way to really describe it is... "Incel the country."
Keep thinking about how to describe their very weird conservative but openly sexual society where you can't have unblurred images of genitals but also have people just browsing porn shops openly in markets like it's no big deal but also how so much of their porn is hugely derogatory towards women. One of their most popular genres is NTR which I won't go into but it's like, pretty derogatory stuff and often includes black mail, rape, etc.
It really just boils down to "Incel the country."