The origins of the Takenouchi Documents are shrouded in mystery. According to legend, the documents were written by a group of Japanese scholars who traveled to China and Korea to study the ancient histories of these countries. Upon their return to Japan, they compiled their findings into a comprehensive text that detailed the history of Japan from its mythological beginnings to the 16th century.
Finding a "verified" academic version is challenging because the documents are not recognized as authentic history. However, you can find translations and analyses in the following formats: takenouchi documents pdf verified