Does Japan have those values, though? Last I heard, Japanese mostly don't travel (not abroad at least); strongly promote monogomy / long-term relationships; abhor the notion of adult children living with their parents; mostly don't have trouble deciding on which city to live in; and still put a lot of pressure for mothers to stay at home instead of going to work.

I should read TFA first but it seems like the root of their birth problem is simply that the financial & social costs of having children far outweigh the (short-term) benefits.