Is there any hope of Japan changing for women?
I think so. I hope so.
I mean, it is different here than 24 years ago when I first arrived, and it seems wildly different than what my MIL and her sisters faced. Similarly to in the west, the "millennials" here are good at redefining what they're willing to do to find happiness, certainly the women are well-represented in that group. There are many who have dropped off the treadmill to do their own thing, to the bafflement of the older generation.
Recently there was an article I'd read which stated how much of an effect on equality and sexism could be attributed to The Pill. The article felt that Japan was an excellent proof of this theory, because The Pill has only recently become available here. I don't necessarily buy into that theory, because the nature of social mores is historically substantially stronger here than in the west. But it is worth thinking about.