Tokyo's Geek Ghetto
What you may not realize just by reading the article is that in Japan it is normal for men and women to continue to live with their parents until they get married, and after marriage one of the children (and that child's spouse) are expected to continue to live in the parents' house. It is only recently that things have started to change such that more college graduates are starting to move out of their parents' house. But that's not typical at all yet. The typical scenario is to live at home all through college (commuting to school each day) and then continue to live at home after graduating and joining a corporation (because the men can't cook for themselves and don't know how to do laundry, and the women generally aren't expected to get high paying jobs--they are expected to get married). So it is common to meet people who are 28 or older, unmarried, and still living at home with their parents.