"Okagami" (the Great Mirror) did not state the enthronement of Prince Otomo in the section of the succession of Tenchi and Tenmu, but says that 'Prince Otomo became an emperor and died as an emperor,' and 'this prince held the post of Grand Minister and became the emperor in the same year.'
『大鏡』は天智・天武の継承では大友皇子の即位に触れないが、別のところで「大友皇子はやがて帝になり、帝のまま失せた」と記す、また「この皇子は太政大臣の位で、つぎにはやがて同じ年のうちにみかどとなった」とも書く。