Most scholars consider Japan a part of Western Civilization because of its post war modernization. If that is the case the Asian Tigers should be considered a part of Western Civilization as should parts of coastal China like Shanghai, Hong Kong and Guangzhou.
Japan is not part of Western Civilization. That is not a slur on Japan at all. Their culture and civilization is very admirable, but distinctly different than that of the West. Their political structure and ecomonic systems are undoubtedly Western in nature, but that does not mean that Japan as a whole is Western in nature.
From your perspective, which you state to be a neo-conservative perspective, I understand your view. I don't disrespect that viewpoint, but I disagree with your initial perspective. Western Civilization is about far more than a capitalist economy and democracy.