@AC-Phoenix: Of course Iihiko showed them Ajimu's hair! If he showed them half of her body, Nienami couldn't wear her hair like a wig.
The closest equivalent I can think of is that many Hindus believe that their Gods will die trillions of years from now, as part of the universe's death and rebirth, and will be restored with that new universe. Like many things, this is far from a universal belief among Hindus.