This theory has Takanori as a descendant of Amenohiboko, a son of the King of Shilla who appeared in Japanese mythology ("Nihon Shoki" [The Chronicles of Japan] and "Kojiki" [The Records of Ancient Matters]).
日本神話（『日本書紀』・『古事記』）に登場する新羅王の子・アメノヒボコの後裔という説。