Although the details may not be accurate enough, it is thought to be true that a holy man named EN no Ozuno, who came from the Katsuragi-san Mountain did exist in real-life and he was sent to the Izu Islands by the slander of KARAKUNI no Hirotari.
事情の細部が説明通りかはともかく、葛木山から来た役小角という呪術者がいて韓国広足の告発で伊豆島に配流されたことは史実であろう。