Ryuuji has an innocent dream: to get married and have a happy family. However, his intimidating appearance and lack of social skills make him entirely unappealing to women, and every date he goes on ends in disaster. One day, a peculiar but beautiful woman appears before him, claiming to be an alien and suddenly proposing marriage! The strongest social contract on Earth sets off an uproar of a cosmic scale. Monotone Ink's Japanese magazine debut.