Yup, those are the Ainu (Kennewick Mans relatives) and the Jomon were before them. I saw a program the other night on the Samurai and the most honored Samurai in history was over six feet tall, he is also the one who began the practice of Harakiri.
There is a thought out there that the original Samurai were the Ainu, taller, bigger, hairy and light skinned. Some even say the Japanese practice of 'white face' is an emulation of these ancient 'royal' Samurai.