Suenaga Shiori lived her days as a full-time housewife. Her son had grown from a college student into a working adult, and marriage seemed just around the corner. Feeling her role as a mother nearing its end, she one day asked him, "Are you ready to get married?" To her shock, he confessed something unexpected: "I love you, Mom." Surprised yet unable to resist, she found herself whispering back, "I love you too." The feelings that began to bloom between them held the potential to turn into marriage. But if her husband discovered their relationship, everything would be destroyed. With this secret binding them together, a new romance quietly began between mother and son.