The Most Valuable Wife (1959)

Kyoko is the third daughter of the Nonomiya family, a very ordinary family. Momoko, the eldest daughter, is married to Ichiro, the president of Mihara Shoji, and Riko, the second daughter, is married to Jiro, the managing director, and they plot to marry Kyoko to Saburo, the third son of the Mihara family. Kyoko is angry at the marriage talk that is being pushed forward without her permission, and declares that she "definitely won't get married," but before she knows it, she begins to become aware of the other person...