A few years ago, I got divorced because my wife cheated on me. I was a cuckold. While raising his only son, he met a woman who was working part-time at the supermarket where he worked and decided to remarry. Although he feels a bit nervous about the age difference between them, he is happy to be with his young and beautiful girlfriend. The only thing that worries him is his only son, Kiyoshi, who is in the midst of adolescence.