Kimijima Mio lives happily with her husband and father-in-law. Her father-in-law is 80 years old, so his health is not good, so she is always there to take care of him. Her father-in-law is a very good person, so taking care of him is also Mio's happiness. Not only that, there is also a secret between the two of them that cannot be told to her husband. Mio takes care of him. taking care of her father from A - Z, even solving his "needs". But she never crossed the limit, she only helped him with her hands and mouth and during a trip to the market, her father Because her husband wanted to go to the bathroom, he fell. Her husband saw that and immediately wanted to take him to a nursing home to make him safer. He also quickly booked a place for him without asking Mio and his father first. My father-in-law's stay here is only four days left. Mio realized she wanted to be with her father-in-law more than ever, she wanted to have more memories with him and then they both crossed that final line. The two of them went crazy making Falling in love with each other over and over again, creating many beautiful memories together in the little time left...