In Tokyo, a secondhand underwear shop that buys used lingerie for cash is gaining attention for its unique system of paying high prices for well-worn items, with clear explanations given on why heavily used pieces fetch top yen. Today's visitor appears to be an ordinary office lady, but her alluring H-cup breasts hidden beneath her blouse immediately stand out. She shyly hands over her used bra while speaking softly. The store manager inspects it and notes there are few stains and minimal wear, leaving her slightly disappointed. However, when he proposes shooting a video on the spot as a condition for increasing the value, she agrees. On camera, she blushes while announcing her measurements and striking various poses to showcase her body. Her fair, soft skin contrasts beautifully with her mature black bra and panties. She shifts positions, thrusting out her hips and showing off different angles. She's told that creating visible stains on film will double the value, and convinced, she begins removing her lingerie and packing them into a plastic bag. The shoot intensifies as close-ups of her pussy are recorded. Using a vibrator, the crew stimulates her over her bra at first, gradually drawing moans from her lips. When the vibrator is slipped into her panties, she gasps "Oh no," her legs trembling uncontrollably. She continues filming as she gushes wetly, squirting repeatedly. The entire session is meticulously documented and stored in the plastic bag with her garments. For the final commemorative shot, she giggles, saying "This is so naughty," then takes a cock in hand and performs a titfuck with her large breasts. Next, full intercourse is negotiated. Wearing a condom at first, he penetrates her deeply, making her cry out "I'm cumming!" as she's taken from behind. Finally, he removes the condom and creampie fucks her, shooting thick streams of cum that drip slowly from her soaked pussy. This video and her used lingerie could now sell for a high price. The entire process, revealing the secrets behind premium valuations and the progression of the shoot, is carefully documented.