Gagged rape training

Yui is a beautiful wife who lives a happy life while living with her husband. One day, when I headed to the bar to pick up my drunken husband, I was charged an exorbitant fee. If she is confused and unable to pay, she is forced to pay with her body, and is gagged and raped. After that, he was threatened by the bar owner and raped by the store owner and his fellow men. Yui is gagged and tied up in an iron cage and is confined and trained to be in an iron cage, and her mind breaks down, and eventually she begins to hope that the men will be cheated on in front of her husband...