"Kaifuso" written in the Nara period described a story of Prince Otomo sympathetically and, unlike "Chronicles of Japan," it called Prince Otomo 'crown prince', but it did not refer to him as an emperor or describe that he was enthroned.
奈良時代に書かれた『懐風藻』は、大友皇子の伝を同情的に書き、『書紀』と異なり大友皇子を「皇太子」とするが、天皇とは呼ばず、即位したとも書かない。