Since joining the company, Tatsumi has always admired department head Mizukawa, who is also the wife of the director. Mizukawa is an extremely beautiful woman and very skilled at her job. Due to being distracted by admiring the department head, Tatsumi often makes mistakes and gets scolded. A colleague sitting next to him also notices and advises him to give up, as Mizukawa is someone he cannot reach. Despite knowing this, he cannot ignore his feelings for her. Because he is too preoccupied with thoughts of the department head, he is unable to complete his work on time. With no other option, Tatsumi has to stay late to finish his tasks. Coincidentally, Mizukawa forgets something and returns to the office. Seeing Tatsumi working diligently, she invites him for a drink. This is the first time Tatsumi sees the gentle side of Mizukawa, and he finds himself even more attracted to her. Mizukawa, too, feels strangely at ease with Tatsumi and can easily confide in him. The distance between them gradually narrows, and Mizukawa takes the initiative to kiss Tatsumi. Feeling embarrassed, they end up at a hotel where Mizukawa usually goes to forget her troubles. But this time, she wants to be with Tatsumi there, sharing her emotions with him. After that night, they both realize their feelings for each other. The next day, Mizukawa tasks Tatsumi with redoing the documents to make him work overtime. That night, they engage in intimacy at the office. Unfortunately, this is recorded by one of Tatsumi's colleagues and spreads throughout the company. Mizukawa's husband wants to transfer her to the Osaka branch and fire Tatsumi to settle things down. However, Mizukawa makes her decision. She chooses to leave everything behind, divorce her husband, and follow Tatsumi. Despite not knowing what the future holds, living in a cramped room with Tatsumi, Mizukawa feels extremely happy, something her previous wealthy life could not provide.