It is said that many similarities can be seen in Greek mythology, such as Orpheus going to the underworld just as Izanagi went to the underworld, and plants and flowers withering when Demeter and Amaterasu hid themselves (god of death and regeneration).
ギリシャ神話におけるオルフェウスの黄泉の国行きと伊弉諾尊の黄泉の国行き、デメテルと天照大神が隠れると草花が枯れるなど多くの類似点がみられるといわれている（→死と再生の神）。