Land of Ka

The Land of Ka was a nation that existed a millennium ago before the start of the series. A greedy and ruthless country, the Land of Ka entered a war against the neighboring Land of So in order to obtain from them a lake who acted as the main source of water for the Land of So. The war between the two countries was ended when Kaguya Ōtsutsuki, the lover of So's emperor, Tenji, activated the Infinite Tsukuyomi and trapped everyone inside it.