Questions about children of Japanese stragglers. Was the marriage between the Japanese and the Filipina legal or was it just a live-in sort of thing. What if the Japanese straggler has a wife and kids in Japan, would his children in the Philippines be considered as legal by the Japanese government ? Too many IFs,and did somebody did a research about what is legal and illegal children with the Japanese government. If a Single Foreign National had kids with a Filipina and the kid was born in the Philippines, the Foreign Father should acknowledge that it is truly his child and he has to submit paperworks, nothing is automatic. I have 2 kids born in Okinawa, Japan and they have a choice of acquiring their Japanese citizenship when they reach the age of 21 and then it has to be proven and they have to submit paperworks. Let us not assume that everything is automatic in acquiring citizenship from a foreign country, nothing is that easy.