Married life was on the verge of collapse. After five years of marriage, Misuna Yamaguchi's desire for a "happy marriage" had withered away as her husband Ken repeatedly made morally harassing remarks toward women. Hiding from Ken's desire to have children, Misuna continued to take birth control pills... Then, a male employee from the head office arrives at the supermarket where she works part-time and turns out to be Toruya Yushima, a classmate from her junior high school days. The two are happy to see each other again after a long time and exchange contact information... the couple's relationship crumbles, but this is only the beginning of a series of revelations about secrets that Misuna does not know. Ken stubbornly refuses to divorce Misuna. Was Ken's love for Misuna genuine?