According to the "Kojiki" and the "Nihonshoki," while Emperor Jinmu and his army were advancing eastward, they were overcome by a noxious gas emitted by evil kami at Kumano, and rendered unconsious.
『古事記』、『日本書紀』によれば、神武天皇とその軍は東征中、熊野で悪神の毒気により倒れた。