In contrast to Ashihara no nakatsukuni (Literally, "Central Land of Reed Plains", which refers to the human world) where people lived, and Nenokuni (Land of the Roots) and Yomi (realm of the dead) where is said to have been underground, it is said to have been located in the heavenly realms.
地上の人間が住む世界である葦原中国や、地中にあるとされる根の国・黄泉に対し、天上界にあったとされる。