"You always help me out, right? I don't mind playing the role of his girlfriend." My best friend Kazuya asked us to deceive his mother, who was pressuring him to marry her. My wife, a full-time housewife who leads a boring life, was keen on the plan, so I had no choice but to agree. A few days later, on the day my wife met Kazuya's mother for the first time, I thought she would just have dinner and come back, but it seemed like Kazuya's mother had arranged for them to go to the hotel and she wouldn't be able to come back. Then, just after the last train, my wife's replies stopped, with her message saying she was sneaking out and taking a taxi home...