Board Thread:Questions and Answers/@comment-3550280-20130813130442/@comment-32656-20130814132133

Really not plausible, imo. Unless the vast majority of Chinese were to become Muslims - which is basically not happening - there is absolutely no way any real number of Koreans become Muslim.

Islam in that era actually did have a Pope-like figure in some regards - the Caliph. And you're missing part of the Japanese problem with the Christians - that the priests/preachers had some degree of say over their "flock" also went against the Japanese version of feudalism.

Think of it this way - the Dutch were allowed to trade because they didn't try to convert. But because of how the religion operated, they still were not allowed in. Same would apply to Muslims.

Not that you'd see Japanese convert to it anyway.