Yuki and his wife have been married for 27 years. His wife, Rei, works at a beauty salon, and her husband, Yoji, has been busy as a finance bureaucrat, but the couple have worked together to raise two children. Yoji has five years left until retirement. Meanwhile, a child was born to the eldest daughter who got married as a student. The long-awaited first grandson. Taking this opportunity, we went on a hot spring trip together to discuss our future life slowly. On a hot spring trip after a long absence, the middle-aged couple burned hot.