51-year-old Daidoji Tamotsu, a department manager of a mid-sized specialised trading company, meets a woman 28 years his junior and decides to get married. On the other hand, Hanazawa Kiichiro is an elite salaryman who works for a top general trading company. He is shocked when his daughter brings home a man the same age as him as her boyfriend. After that, a series of problems erupt in what he had believed to be the ideal family and he starts to question his way of life so far.
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