Hotsuma Tsutae
The Hotsuma Tsutae (also "Hotuma Tsutaye", Japanese 秀真伝) is an elaborate epic poem of Japanese legendary history which differs substantially from the mainstream version as recorded in the "Kojiki" and the "Nihon Shoki". Its antiquity is undetermined. Although many proponents allege that the "Hotsuma" predates the mainstream mythology, the first known manuscript was dedicated to a shrine by Waniko Yasutoshi (also known as Yunoshin Ibo) in 1775. Some excerpts were published and translated into modern Japanese in 1884, a printing which was noted by Hirata Atsutane in his work on "jindai moji", a Japanese writing system developed prior  to the use of Chinese characters, but which otherwise ignored the work. Atsutane's Kokugaku was principally concerned with the "Kojiki" and the "Hotsuma Tsutae" would have only muddled his theories. Yasutoshi's manuscript was almost lost, but was discovered and rescued in 1993 following the publication of some popular books on the subject in the mid-20th century by Yoshinosuke Matsumoto. The "Hotsuma Tsutae" is known for its text and rhythm. It was written in "yamato-kotoba", which only uses a Japanese vocabulary which predates contact with China. Some of the "yamato-kotoba" used in "Hotsuma Tsutae" are unattested elsewhere  in the Old Japanese corpus but have parallels to old words, meaning that if it is a late medieval hoax it is extremely elaborate. Among other things in its primarily historical and non-mythological record, the text discusses the births, lives, and deaths of "kami" from Japanese folk shrines and history; in this case, the word "kami" being used to mean something like royalty and not "gods". In the poem, Amaterasu, the sun "kami" of Shinto, is male, and not female as is written in the official records. Matsumoto theorizes that Amaterasu was feminized in the "Kojiki" and "Nihon Shoki  to provide a justification for the reign of Empress Suiko who reigned just before those documents were written. Although for the most part Japanese academics remain uninterested in this text, some scholars are of the opinion that it may have been written in the Edo period. This is due to claims that the text was written in an original Japanese alphabet - in academic circles, the existence of writing in Japan before the use of Chinese characters is denied, also the alphabet does not reflect the Old Japanese phonology but rather those of later stages of Japanese. The general opinion is 	Hotsuma Tsutae
27954817	that it is a false document. However, no definitive conclusion has yet been reached.