Sougetsu Miko

The people of Mars (Hiboshi) live in 108 domes that recreate their world heritage. The history of Amatsuboshi, or Earth, the planet of their ancestors, has become a myth, and the people of Mars only recognize the world as the dome itself, forgetting that they are even living on Mars.

The Kuniazuma Dome, where the story takes place, is a land based on Taisho era Japan. Hime, the girl who protects it, fulfills her role as a priestess at the Usano Shrine and leads a peaceful life at the shrine with her friend Aki and Imi, the daughters of a wealthy merchant.

One day, however, a young man from the imperial capital changes Hime's fate. In order to find out her mission and who she is, Hime and her friends follow the young man on a pilgrimage as shrine maidens.

(Source: Wikipedia Japan, translated)