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The indigenous Japanese characters, already in use in the ancient times and long before the arrival from China of Chinese characters, are called Kodai waji(generally referred to as Kamiyo moji, or characters of the age of gods). The existence of Kodai waji has been the subject of active controversies for centuries. Today, however, thanks to the efforts of many researchers and ample evidence, there no longer is any about as to the historical existence of Kodai waji.
There are several ancient literatures written in Kodai waji, such as Uetsu Fumi, compiled about 750 years ago, Utsukushino Mori, written about 1,000 years ago, and Hotsuma Tsutae written about 1,800 years ago. In addition, quite a few other records written in many different Kodai waji styles, ahiru-moji, ahiru-kusamoji, taneko-moji, awa-moji, including yemoji, and izumo-moji. All these indicate that aristocrats and poweful ruling clansmen were well versed in kodai-waji.
The genesis of kodai-waji dates back to more than ten thousand years ago, long before the birth of writing elsewhere in the world. This, coupled with the fact that the huge stone structures seen in many places in Japan, the archetypes of pyramids, are ten thousand years old or older, is an important evidence indicating that japan has an extremely long history and the fountainhead of the birth of mankind. These facts will have added importance in the future to writing a true history of the world.
The Forty-eight iroha Characters
For centuries it has been commonly believed in Japan that kana characters and the iroha poem was created by Kobo Taishi.
However, Katakana had existed since the ancient age of gods, or Kamiyo, long before Kobo Taishi's time. These ancient characters of the iroha poem, represent forty-eight divine activities and carry profound meanings.