housewife and underwear thief

Mr. and Mrs. Ayase have reached a period of boredom and are living a carefree and boring life as a married couple. His wife, Rieka, recently noticed that her underwear, which she had hung out to dry, was missing, and she felt that she was in danger. One evening, while trying to take in the laundry, Rieka is attacked by an underwear thief hiding on the balcony. Even though Rie is being raped by a man other than her husband, she can feel her pussy getting wet. What will be the fate of the married woman who turns into a sex slave for an underwear thief? ?