Nami was living a comfortable life with her husband, who, despite running a small cafe, had achieved success as an owner. One day, their mutual junior, Riku, came to stay at their house for a few days. However, a few days later, on the day her husband was delayed due to a shop problem, Riku confessed his feelings and they ended up having a physical relationship. Unfortunately, her husband returned home at that very moment and witnessed the scene... But this incident led to an unexpected request from her husband.