The other very interesting point that I took from Lurie’s book is that much of the original Japanese use of kanji possibly dates back to the Koreans. That is, the original practice of using what was later codified as on-yomi and kun-yomi and other aspects of the Japanese ‘system’ first arose on the Korean peninsula and was brought to Japan by Korean teachers. Unfortunately the historical record is sadly lacking at this point. If more archaeological and written records were available, it might be possible to prove that what the Japanese have now is a natural outgrowth of Chinese and later Korean usage.