There is no child between Koenji Takashi and his wife, Reiko. Takashi himself was convinced that there was nothing he could do in the future. Neither of them has a physical problem. There is simply less sexual intercourse. ... what is the cause? It's a spiritual problem of honor ... The cause is the unwieldy feelings for Misato, her mother-in-law. When they were young, one night's mistakes upset their lives. And finally, the day has come when I can't control my thoughts ...