After 150 years of Protestant missions, only 1% of Japanese claim to be Christian, including the Catholics and the cults (JWs & Mormons are strong). Compare that to most Muslim countries with up to 5% Christian. So I'd say the missionary you helped to support was doing a great job.
What do you rgink is the main rreason they are so stubborn on salvation?
is it a cultural thing, or steeped in idols/religions, or what?