Brighter Than the Dawning Blue

The LORD reigneth; let the earth rejoice; let the multitude of isles be glad thereof. Clouds and darkness are round about him: righteousness and judgment are the habitation of his throne. A fire goeth before him, and burneth up his enemies round about. His lightnings lightened the world: the earth saw; and trembled. The hills melted like wax at the presence of the LORD, at the presence of the Lord of the whole earth. The heavens declare his righteousness, and all the people see his glory. Long ago people settled down on the moon and established a kingdom there, the Sphere Kingdom. However, relations to the earth cooled down and were finally broken off since a war was fought hundreds of years ago. There isn't any business between the two races and travelling isn't allowed. The only link between them is to be found in the Mitsurugasaki Central Port City. However, one day the princess of the moon kingdom, Feena Fam Earthlight, is sent on a "homestay" to the earth. She gets to stay at Asagiri Tatsuya's house. And this is where her task of learning the customs and lifestyle of the earth begins. * Based on a bishoujo game by August Soft.