According to this theory, Toyo, who succeeded to the throne after Himiko, is identified with Amatoyo Hime, whose name was mentioned two generations after Unabi Hime no Mikoto in the family tree.
またこの説では、卑弥呼の後に王位に就いたとされる台与（とよ）を、系図の中で、宇那比姫命の二世代後に記される、天豊姫（あまとよひめ）とする。