Aya, living happily with her husband. One day, her father disappeared, leaving behind a large debt. Aya, as his biological daughter, was responsible for repaying it. Unable to consult her husband, who was steadily climbing the career ladder, Aya was forced into prostitution by the loan sharks. She gained favor with a wealthy client, who frequently requested her services. This client, with a perverse nature, began to develop Aya's anal skills.