In Scene 1, the woman performs the rare act of grating yamaimo (mountain yam) herself. This is no coincidence—she is carefully preparing the irritant in anticipation of the intense itching she is about to endure. This moment serves as a crucial setup for the events to follow.
In Scene 2, with her hands bound, she is smeared with the grated yamaimo and must endure the unbearable itch without scratching. Blindfolded to heighten her sensitivity, she faces an intensified mix of pleasure and torment. Her physical reactions throughout this test become a focal point of suspense.
In Scene 3, her feet are now restrained as well, and tickling is introduced as a new element. To escalate the sensation, guest performer Kazuo Matsushita appears, adding depth to the scene. The sensation of foot tickling introduces a completely new layer of stimulation, distinct from what came before.
In Scene 4, she remains bound to the bed, continuing to resist the itching. After enduring for about ten minutes, a vibrator is introduced to intensify the torment. This layered escalation of stimulation generates a new dimension of pleasure and suffering. The appearance of the Jukucho (head teacher) as an assistant further enhances the scene’s intensity.