First comes marriage, then comes an earthbound love that is out of this world! From the day his parents named him, Nasa Yuzaki has felt connected to outer space…whether he likes it or not. His efforts to outperform the space program veer off course when an accident introduces him to Tsukasa, a mysterious girl with strange powers. Is she an alien, a moon goddess, or something else? Since she insists on marrying him, Nasa will have plenty of chances to find out! Determined to find out what Tsukasa’s deal is, Himari tags along on the class trip to Hokkaido. But she may get in deeper than she planned, especially when she wades into the local sand baths! Meanwhile, Nasa’s romance-obsessed students are determined to give Nasa and Tsukasa a night the couple will never forget—no matter how hard they try.