In addition to rejecting their claim that being unable to marry was unconstitutional, the court also threw out their demands for 1 million yen in damages for each couple. Three same-sex couples - two male, one female - had filed the case in the Osaka district court, only the second to be heard on the issue in Japan. An Osaka court on Monday ruled that Japan's ban on same-sex marriage was not 'unconstitutional', dealing a setback to LGBTQ rights activists in the only Group of Seven nation that doesn't allow people of the same gender to marry.