In order to help her father, Chiwa Takanashi agrees to an arranged marriage with the company president, Hokuto Mamiya--a man she doesn't know--at the request of Hokuto's grandfather. Chiwa believes the arrangement isn't binding, but her new partner seems to think otherwise. Can two strangers living together find their way to a happy marriage?!

While on an overnight trip together to his hometown, Hokuto reveals the circumstances of his birth. Chiwa makes the decision to remain with Hokuto, and falls deeper in love with the man she married. But will she still feel the same way once Hokuto confesses the real reason he married her?