Transnational marriage in Japan
An international marriage in Japan is a marriage between a Japanese and a non-Japanese person, in accordance with the formalities provided by the law of Japan or of a foreign land. Procedures and rules mentioned in this article are mainly those of Japan, but in some cases other requirements are imposed by the homeland of the non-Japanese spouse, or by the foreign land where the concerned couple marry.
Source: Wikipedia — Transnational marriage in Japan (CC BY-SA 4.0)