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!

Tsukasa is the kind of girl who takes half a manga volume just to work up the nerve to tell her husband she cares about him. Sure, it's cute in a tsundere way, but the ice-queen act carries a chilling risk. What if another girl comes along who's more open about her feelings? Panty-flashingly open, even? And what if she's also Nasa's childhood friend, the most powerful trope in romantic comedy manga? Anyway, here's Himari. You and Nasa have met her before, but she's grown up a lot since then.