Kaguya Otsutsuki suddenly descends from the heavens as the people of the Land of Sou look on in surprise and suspicion. But their king, Tenji, is enthralled by her and takes her for his concubine. In this age of endless war, Kaguya wishes for nothing but peace. But as the self-proclaimed protector of the Divine Tree, she soon finds herself engulfed by the tides of chaos and war.