Prince Otomo was given a posthumous title in 1870 and called Emperor Kobun, so the theory was also called an Emperor Kobun enthronement theory.
大友皇子は1870年に諡号を贈られて弘文天皇と呼ばれたため、弘文天皇即位説（こうぶんてんのうそくいせつ）ともいう。