One of the reasons why Japan has an aging population and the lowest population growth rate in the world is because women often do not want to get married, more specifically, they are afraid of being sexually abused by their own father-in-law. Saejima is a good example of this, since she got married, she has always been noticed and watched by her father-in-law. He always cherished in his mind a hope that one day he could capture the slender body of his beautiful daughter-in-law. Unfortunately, that hope reluctantly became a reality when his only son had to go on a business trip away from home at the request of the company. This is really a very difficult time for the wife when the old goat father-in-law constantly acts of rape even though she tries to resist in helplessness to satisfy the craving of lust in her body. It's true that the father-in-law is a bastard.