It looks like that you want to write up about the Baekuje about two points. One is its relation to the beging of history of Japan with no evidence, and the
other is disregarding the alliance with Japan and Baekuje in 5th and 6th cent. Japan sent army and fought with Baekuje against Tang, and Japan accepted Beakuje's royal families as hostage. In this surroundings Japan accepted Baekuje's scholar and several tributes. It was not one-sided. Every one pointed out these facts, but you never agree this simple fact.