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! Nasa has been kidnapped! Tsukasa isn't too worried, though, as her husband's abductors are obviously his own harebrained, hyperactive students. If she can solve the riddles they've left for her to follow, she can win Nasa back. The question is whether she wants to. As it turns out, there's a more dangerous game afoot, as Himari has gathered the evidence she needs to confront Tsukasa with proof of her immortality.