The family registration system is a system which records identity-related information about individuals such as birth, death and marriage, providing public proof of such information. The family registration law also applies to foreigners within Japan as being valid under the principle of territorial jurisdiction; thus, foreigners living in Japan must also notify the administrative office in their municipality when you have given birth or died in Japan, and also at the time of marriage or divorce, based on the family registration law. Such notifications are kept at the office, and represent material proving matters related to the identity of the person in question.
*In the event of birth or death, this should also be reported to the foreigner’s own country. For the method of procedures, please confirm with the embassy or consulate of your country in Japan.