While his parents are away for three days, Mina, his adult sister-in-law, comes over to handle the housework. Whether she is cleaning or cooking, he cannot stop staring at the huge ass packed into her tight jeans, especially with her thong constantly peeking out between the cheeks. Unable to endure it any longer, he pushes her down, grabs her ass, and pounds her from behind until those cheeks bounce wildly. After coming, he panics over what he has done, but Mina’s own desire has been awakened. Soon she is deliberately flashing that thong and inviting him to fuck her again.