After getting married, Mari quit her job and lived a happy married life as a housewife. However, Mari had one complaint - living with her vulgar father-in-law. She hated being alone with her father-in-law during the day when her husband was not there, so she reluctantly returned to work, but after returning home from work, she fell asleep tired with only her father-in-law present. When her father-in-law found Mari defenseless, he took advantage of the fact that his son was not there to play with her young body and raped her. From that day on, whenever the two were alone, her father-in-law raped Mari...