According to the Kojiki preface, Emperor Tenmu said:[2][3] What I hear is that the Teiki and Honji brought about by the many houses already differ from the truth and contain many inaccuracies.
The Kojiki preface makes reference to two other titles: Sumera Mikoto no Hitsugi (帝皇日嗣, "Genealogy of the Emperors") and Sakitsuyo no Furukoto (先代旧辞).
One theory claims that was a genealogy of the imperial line recording the reigns of each emperor.
[4] Another theory, based on the literal title, claims that it was a record of imperial accomplishments, but that it would not have been appropriate as a genealogy.
[6] A competing theory identifies the second and third volume of the Kojiki as the actual contents of the Teiki.