Let's now look at KOREAN population who is thought be most related to modern central japanese. Their phenotype is known to be closest to Mongolian (South Sibelia).
Average (not necessarily typical) Korean face
http://www.andongkim.com/articles/20...koreanface.htm
Korean scientists allegedly produced what they call, "the average Korean face". The Korean Institute of Science and Technology information (KISTI) working together with the Catholic Institute for Applied Anatomy made computer tomographic scans of Koreans last year and with the aid of a supercomputer produced a "digital Korean" -- a 3-D video of the average Korean's physical structure.
Do you see much differences from the northen japanese? They don't look like above japanese, esp northernmost and southernmost japanese, do they?