Yoake Mae yori Ruriiro na: Crescent Love

夜明け前より瑠璃色な

The moon and the earth are linked by a single contact point, "Mitsuru ga Sakichau Ouren Rakuniushi" where Tatsuya lives under the supervision of the Sphere Kingdom (Moon Kingdom)'s Princess Feena Fam Earthlight who is coming to stay at his home. (Source: ANN)