I am always fascinated on knowing where the Japanese come from. I know it's not what the Japanese would like the world to think.
Here is what the Japanese think they are from:
Until 1946, Japanese schools taught a myth of history based on the earliest recorded Japanese chronicles, which were written in the eighth century. They describe how the sun goddess Amaterasu, born from the left eye of the creator god Izanagi, sent her grandson Ninigi to Earth on the Japanese island of Kyushu to wed an earthly deity. Ninigis great-grandson Jimmu, aided by a dazzling sacred bird that rendered his enemies helpless, became the first emperor of Japan in 660 b.c. To fill the gap between 660 b.c. and the earliest historically documented Japanese monarchs, the chronicles invented 13 other equally fictitious emperors. Before the end of World War II, when Emperor Hirohito finally announced that he was not of divine descent,
And I know this is ******* BS!!!!
<From my intuitive point of view, given a mixed group of random Han, Japanese and Koreans, I ( or many/most Han Chinese I believe) can easily pick Koreans out from facial identification only, with probably 7 out 10 accuracy. But I'll find it very difficult to seperate Japanese from Chinese. This execise shows that somehow Japanese are probably more related to Han Chinese, than Koreans are to Han Chinese. Above study proves that this common intuition is right.>
Japanese and Korean languages are both classified by linguists as Altaic languages, along with Mongolic, Tungusic and Turkic, among others. Nevertheless, Japanese is so distant from Mongolic and Turkic than the similarities are hardly more evident than those with Indonesian or even Tamil.
Korean language, however, is much closer to Japanese. The grammar is very similar, and both have imported about half of their vocabulary from Chinese, which makes these three languages almost mutually understable in the written form, thanks to Chinese characters (rarely used in Korea nowadays, except in place names). Native Korean and Japanese words are often related when comparing Old Korean and Old Japanese, but few of them are really obvious to modern speakers.
Mindset and values in Japan and South Korea are deeply intertwined, thanks to the strong influence of Confucianism, Taoism and Buddhism in both countries. This is obvious from the corporate culture (e.g. discipline, seniority system), the strict politeness system, or the Taoist/Buddhist value of simplicity and humility. These cultural aspects all ultimately stem from China. That's why Japan and Korea are considered branches of the Chinese civilisation.
The Japanese colonisation of Korea (1895-1945) has left of a lot of resentment on the Korean side and a sense of superiority mixed with repressed shame and denial on the Japanese side. This is why both Koreans and Japanese are often reluctant to admit their similitudes. However, thanks to natural affinities in sensitivities and tastes, South Korea and Japan appear to be culturally closer as ever nowadays.