"Tales of Times Now Past," written during the late Heian period, described many tales of Tengu, such as a devil called 'Hawk' that would fly through the sky and possess people, and one having the face of Tengu with a human body and a pair of wings.
平安末期成立の『今昔物語集』には、空を駆け、人に憑く「鷹」と呼ばれる魔物や、顔は天狗、体は人間で、一対の羽を持つ魔物など、これらの天狗の説話が多く記載された。