This filthy scam/problem is getting worse. Its not really the Japanese who are mainly doing this, but rather Chinese, Vietnamese and now, Indians.
The pay agents as much as $80K to provide homes/apartments before and after birthing and to arrange the childs passport
If there are any complications, they take the mother and child to the local public hospital, where YOU pay for it.
Russians too. It's become a cottage industry for pregnant russian women to fly to Miami to give birth.