Located in a certain part of Tokyo is a secondhand underwear shop specializing in high-paying instant cash purchases. This store frequently attracts women in financial distress who come to sell their worn underwear and uniforms, resulting in a wide variety of styles and sizes on display. The staff take advantage of these women's vulnerabilities, pushing them to provide proof of wear through photo shoots, eventually coercing them into filming full sex videos—making this a notorious, predatory establishment. The shop draws in women with stunning physiques, including those with exceptionally large breasts. One woman’s body is so voluptuous it's said her breasts sit on the sofa before she does. Her chest size is described as a "K-cup," so massive it defies measurement—far surpassing even an F-cup. When offered a deal—"We'll buy whatever you're wearing right now"—she lifts her blouse to reveal her heavy, enormous tits. The staff, stunned, snap instant photos, then proceed to remove her skirt. Adjusting the tight fit of her panties, they take more photos. Noticing minimal stains, they suggest she can earn even more if she adds moisture, such as cum or pussy juice. After negotiation, she agrees to masturbate on the spot. Sitting on the sofa, she spreads her legs and begins rubbing her thick pussy with her fingers. She appears to climax, but upon inspection, the stain on her panties is deemed insufficient. She grabs a vibrator, presses it against her pussy lips, and grinds intensely, trembling with pleasure. The staining improves, sealing the deal. She strips off her underwear while more photos are taken. Her extreme sensitivity leads the staff to propose filming a video—offering instant cash in exchange for sex, with her face hidden. Tempted by the devilish offer, she agrees. A cameraman is called immediately and filming begins. From behind, her massive tits are gripped tightly, their sheer weight palpable in hand. Her nipples react instantly to stimulation, twitching with sensitivity. She holds her own breasts, spreads her thick labia, and fingers her clit. "Ahh, no… stop, that's bad…" she moans. Her clit becomes rock hard as her soaked pussy is relentlessly worked with fingers and an electric massager. "Aaah, I'm cumming…" she cries out, climaxing. Next, she’s made to hold a cock, bring it to her face, and jerk it off. During this, she confesses, "I want to lick it…" and while touching her own pussy, she’s made to give a blowjob, her voluptuous body convulsing as she cums again. Then, the cock is thrust deep inside her, pounded to the hilt. Fully buried in her thick pussy, the cock slams in and out as her hips shake. The busty woman cums repeatedly, her enormous tits squeezed mercilessly as her pussy is ruthlessly pounded. "Haaah, I'm cumming!" she screams, collapsing like a broken pine branch. Next, doggy style on her ultra-thick, jiggling ass. "Aaah, nooo!" she cries, pulled onto the sofa into rear entry. Her big tits are squeezed as the cock thrusts deep. Flipped over into cowgirl, her full naked body embraced, her tits sucked as her pussy is pounded hard. "Aaah, I'm cumming, cumming!" she screams, swapping spit in missionary. Watching her wobbling, jiggling body, the man thrusts violently, then erupts in a cumshot all over her magical tits. Feeling the success of the shoot, they realize this is exactly what fans of voluptuous women have been waiting for—a hot, erotic video finally in the can.