"Riko Hanae, the most beautiful girl in the school, proposed to me, and before I knew any better, my newlywed life had already begun."

Minato Niiyama's life drastically changes. Riko Hanae, the cutest girl he knows, proposes to him. The two of them leap headfirst into married life. Everything seems too good to be true for Minato-kun. Turns out that there is more to this marriage that meets the eye.