Satomi Fujii becomes the model, meticulously demonstrating the procedure of being tied up with her hands behind her back against a pillar in an old house. Her posture is calm and erotic, the sight of ropes entwining her semi-naked body highly alluring. After slowly showing the leg rope placement and rope handling, she progressively completes the intricate "Yotsuhi-gumi" leg binding technique. The process is exquisitely detailed, captivating viewers throughout. Next appears Aki Oumi, who serves as the model for demonstrating the "Ultra Big Tits Vertical Breast Split Binding" technique in an easy-to-understand manner. Each time the rope bites into her soft flesh, her shifting expressions create a deeply sensual and erotic atmosphere.