Goddess Si has Her bound sub in a vulnerable predicament. He's fortunate to be in Her presence. She knows how desperate he is to experience Her torment and uses this knowledge and Her charm to take advantage of him financially. Hovering over his face She inquires about whether he's sent his most recent paycheck. He's sent the last three! Si isn't ever satisfied until draining his savings as well. Once Si teases and taunts him into submission and gets the financial commitment She's seeking, She finally takes his breath away with Her ass.
Si also explains that She doesn't want to feel his nose. It would be better off flattened so She has a more comfortable seat. Each time She sits Si is amused knowing the cartilage in his nose is just being molded by the pressure She's imposing on him.
Si also taunts him about his chastity predicament and makes him admit that his cock is useless. This is all so much more enjoyable for Her when She's able to not just physically break him down, but also mentally. He's degraded and made to feel like nothing more than the object that he is. That means his only value is being a seat and an ATM. The more he accepts that he has nothing else to offer the more smoothly everything will function!