Mr. and Mrs. Izumi have been married for 27 years. His wife, Ryoko, is a former childcare worker and a full-time housewife, and her husband, Yasuo, has worked as an engineer at a major general contractor. Even though I am busy, my husband and wife have cooperated to raise children. Yasuo has three years left until retirement. Meanwhile, the eldest daughter Chie had a child. The long-awaited first grandson. Taking this opportunity, we went on a hot spring trip after a long time to discuss our future life slowly. The mature couple, who were soaked in the hot springs and regained their memories of their youth, were hotly tied for the first time in a long time.