Japan may be moving towards the legalisation of same sex marriage, if a recent opinion poll is any gauge of things:
https://english.kyodonews.net/news/2019/09/8cd410ef9806-70-of-married-women-in-japan-support-same-sex-marriage.html
https://en.wikipedia.org/wiki/Recognition_of_same-sex_unions_in_Japan
“Almost 70 percent of married women in Japan believe that same-sex marriage should be legalized in the country, a government survey of around 6,000 married women showed Friday. Among those in their 30s or younger, roughly 90 percent supported the legalization of same-sex marriage, according to the survey conducted last year by the National Institute of Population and Social Security Research. The survey has been conducted every five years since 1993 to collect data on Japanese households, including the distribution of chores. Questions on same-sex couples were added for the first-time last year.”
Still, Japan is westernised. What about China, and conservative places in South East Asian, such as the Philippines? China’s parliament has ruled out same sex marriages:
https://www.reuters.com/article/us-china-lgbt-marriage/chinas-parliament-rules-out-allowing-same-sex-marriage-idUSKCN1VB09E
As has the Philippines Supreme Court. But it will be interesting to see how long these countries hold out against “international opinion.” Of course, same sex marriage is illegal in many “Islamic” countries, as is homosexuality, and again it is interesting to see if this lasts over the coming years, especially when the West crumbles and falls:
https://www.usatoday.com/story/money/2019/06/14/countries-where-being-gay-is-legally-punishable-by-death/39574685/
https://edition.cnn.com/2019/09/04/asia/philippines-gay-marriage-intl-hnk/index.html