“The problem(of low birth rate) is so severe amongst unmarried individuals that Sociologist Masahiro Yamada created the term “parasite singles” to describe the Japanese individuals, usually directed at single women, who remain unmarried in their twenties and thirties and continue living with their parents.”

What a surprise that the term is directed against women….
never mind the 80 hour working week or lack of housing or childcare or cultural expectations of family responsibility falling entirely on females – all of which came from the older people in charge, just blame young women!