Marriage system

[kidvideo]

Also, the Japanese constitution (unlike the US's) does indeed define marriage as between a man and a woman.

True... however there's this http://en.wikipedia.org/wiki/Same-sex_marriage_in_Japan

And since there is a European population in the game, this is relevant http://en.wikipedia.org/wiki/Recogni...ions_in_Europe

As for Japan's Constitution... just because something is written in a Constitution does mean it's fair or just. One simply has to look to the US Constitution's 13th, 18th, 19th, & 21st Amendments.