I'm 31 years old. I am the president of a printing company that lasts for three generations. His wife, Iro, was 38 years old and married 13 years ago. My mother used acquaintance's stigma to look for her selfish sister's wife, and she married my wife in marriage by introducing her mother's acquaintance. One day, I saw the factory manager Ozawa and his wife having sex... And, unforgettablely, I could only watch the situation until it was over.