At a drinking party that started at my workplace, people from headquarters invited the two of us to another round. Under the influence of alcohol, I accepted. Then I found myself in a room with a bed. There, I was tied up with rope and then had sex. From that day on, I couldn't forget the feel of the rope and the experience of being tied up during sex. Even though it was just a mistake, my ever-increasing lust became uncontrollable. It all started because of that rope…