Honoka, 45 years old. Petite at 155cm and slim at 43kg. With measurements of B80, W58, H82, her compact figure is instantly captivating. She enjoys drinking and holds a sommelier license as a hobby. Though she appears serious at first glance, alcohol lowers her guard, leading to numerous men passing through her life. While her experience count is high, she's only maintained long-term physical relationships with about five partners. Her first time was at 17 with a 21-year-old college student. It was painful, but he was the one who first taught her orgasm—her current blowjob and sex techniques were shaped by him. She began masturbating in her second year of middle school after seeing a magazine and thinking, "Maybe I'll just touch a little." Initially over her underwear, she gradually moved to direct clitoral stimulation. She did it about twice a week, mostly in her room before bed or during shower masturbation. This time, she performs finger masturbation for the first time in a while. No prior masturbation filming allowed. She rented two rooms in a 3LDK apartment, placing two cameras in an empty room. After filming, she was called to leave. Her masturbation method is particularly rare—she rubs her clit using the protrusion of the first joint of her left thumb. Filmed from two angles, she starts by reading an erotic magazine, removing her pantyhose, and rubbing her crotch over her panties. She shifts her bra to touch her nipples while moving her hand up and down her groin. Then, twisting her left hand, she rubs around her clit with her thumb, sliding her hand up and down from the side of her panties—stimulating with her thumb at a fairly rapid pace. Her face contorts as she presses her hand into the gap of her panties, moving her entire left hand. As moans begin, she pulls one leg out of her panties, grips her hand into a fist, and vigorously rubs her clit with the first joint of her thumb in fast, twisting motions. As her hand speeds up, her body shakes violently and her moans grow louder. Eventually, she lies sideways, trapping her hand between her legs as she climaxes. She wipes her crotch with a tissue—almost unconsciously wiping her thumb as well—then puts her panties and pantyhose back on. Though it's finger masturbation, this specific use of the thumb's first joint is something rarely seen. Honoka, who only has experience with normal sex and punishment chairs, is suddenly shown the punishment chair. "Well, just sit down," she's told, sitting in only her panties. Her hands and legs are bound, and she's blindfolded. A vibrator traces her body, teasingly gliding over her inner thighs and around her nipples. She winces at even slight contact. When the vibrator touches her nipples, she starts exhaling audibly; when applied to her pubic bone, she lifts her hips. Her clit is exposed from the side of her panties, and when the vibrator makes contact, her reaction is unlike anything before. She begins moaning, appearing distressed, saying, "Tell me when I can come," and immediately says, "I'm already about to come." After repeating this three times, even when the vibrator is pulled away, it's clear she's struggling to hold back orgasm. Realizing it's critical, the vibrator is pressed directly to her clit, pushing her over the edge instantly. Though she claimed she could only come once, continuous vibrator stimulation makes her approach climax again. When the electric massager is applied, her body trembles as she pleads, "Stop, please stop for real!" Her body stiffens, restrained and suffering, until she finally climaxes. The vibrator sticks to her nipples, while thick pubic hair protrudes from the sides of her panties.