Nami lives a stable life with her husband, who runs a small cafe. One day, Rikuto, a junior colleague of both husband and wife, comes to stay at their home for a few days. What begins as an ordinary visit takes a turn when her husband is delayed due to an emergency at the shop. Seizing the moment, Rikuto confesses his feelings and the two end up sleeping together. Unfortunately, her husband returns home earlier than expected and catches them in the act. However, instead of anger, he makes an unexpected request, setting off a surprising new chapter in their lives.