Miyu and Shota are a happy couple who have been married for three years. Shota's cousin, Jun, lost his wife in a traffic accident a year ago and has been depressed ever since, quitting his job. Miyu, who was a case worker, is concerned about him and suggests that he change his environment. Jun lives with Miyu and her family for a while, and feels sexual desire when he smells the woman living under the same roof as him for the first time in a long time. Jun confronts Miyu with the painful truth about his wife's death, and then...