The good news is that in South Korea, after a binge of girl abortion in the 1990s, the boy/girl birth ratio is trending back to normal. Laws against sex-selection abortions are better enforced there than before, and better than they are elsewhere in Asia. More importantly, there seems to be a change in culture that values girls and boys more equally. There also appears to be less acceptance of abortion in general.
[This table is from an analysis by Christophe Guilmoto]
South Korea is the most Christian country in Asia, after the Philippines, and is the most Protestant country in Asia by a good way. I believe the Christianization of South Korea has contributed to its standout movement away from "gendercide," just as Christianization contributed to that nation's notable transition to democracy.