While the 9th generation male god of celestial gods, Oshihomimi no mikoto, and the gods following him are clarified along with the names of empresses, it seems that the reference to the spouse of Amaterasu Omikami was intentionally concealed in the Kojiki (Records of Ancient Matters) and the Nihonshoki (Chronicles of Japan).
そして、９代男神、忍穂耳命以降は后の名も明らかにされているが、記紀では天照大神のつれあいに当たる神が意図的に隠されたようである。