After graduating from university, I got a job at the company I applied to. After a while, I got close to Miyuki, who was in charge of a client, and we started dating and then got married. Miyuki was originally unconcerned and didn't want to get pregnant because she still wanted to work, so we didn't have sex, and I felt a little lonely. One day, Miyuki's best friend from her school days, Chiharu, came to visit. Unlike my serious wife, Chiharu has a free-spirited and cheerful personality, and I was overwhelmed by her, but the moment my wife left her desk, she kissed me and smiled at me in surprise...