Yes white worship is a serious problem in Japan. They think that they are a superior race when compared to Koreans and Chinese. Genetics though show that they are closely related to Koreans and northern Chinese. The yayoi component of the Japanese people is from mainland asia, which mixed with the indigenous jomon.

The main problem is that Japan and east asia has adopted a faustian view of progress and are further down the curve of modernity. There is nothing really bad in Japanese demographics (1.4)compared to other countries, its just that they reached there first, and thus the effects of the decline are more apparent there, The median age in Japan is 50, Korea for example has worse demographics (0.88) but is not as far down the curve.

I think that new sakoku, a sort of total isolation can save japan.