I run a company and have been married to my wife Yuko for two years. Yuko was originally an employee of Koizumi's company, which was a subcontractor, and I took her away from Koizumi as a condition of the merger. To feel superior and to show off, once a week I make Koizumi, who I have purposely placed as my aide, sit behind a one-way mirror and show her our marital activities. After two years of marriage, I was convinced that Yuko was completely mine, both body and Kokoro. However, every Wednesday, Yuko has been having secret rendezvous with a certain man behind my back...