In Tokyo, there's a secondhand underwear shop specializing in high-priced purchases, where women in need of money come to sell their worn underwear and uniforms. The shop clerk skillfully persuades customers to take photos as proof of wear, then gradually coaxes them into participating in sex video production. When a customer mentions she needs extra cash to go on a trip to Okinawa, the clerk refuses by saying, "We can't accept them if there's no sign of use," but promises a high appraisal if she sells the underwear she's currently wearing. After some persuasion, the deal is settled, and they begin taking Polaroid photos. The clerk asks, "When did you last change your underwear?" The customer replies, "This morning, after my shower." The clerk responds, "That won't sell. You need to wear them for four or five days at least," and suggests that masturbating in them will increase their value. The negotiation succeeds, and the customer agrees to masturbate on camera with her face hidden. She opens her legs, fondles her big tits, and starts rubbing her clit and pussy with her fingers. The video captures extremely erotic content. The clerk inspects the stains on the panties and says, "The staining isn't enough. I'll buy your bra instead—take it off." The customer removes her bra, revealing soft, jiggling breasts, and moans as she pinches her nipples. The footage grows even more explicit. The clerk asks, "You're not really doing it three times a week, are you?" She replies, "Sorry, I lied. It's five times." Agreeing to his suggestion to masturbate with her panties pulled aside, she begins direct finger-fucking. She thrusts her index finger deep into her pussy, vigorously stirring her insides. The clerk says, "Let me help you—let's make it even more stained. The price will go up," and starts massaging her soft tits while stimulating her nipples. "Aaaah! It feels way better than doing it myself!" she moans. As he sucks her nipples, he rubs her pussy over the panties, then switches to direct finger-fucking. Her pussy squishes with wet, erotic sounds. "Aaah, no, stop! I'm cumming, I'm cumming!" she screams, her hips twitching as she orgasms. He turns her around, making her stick out her ass. Her panties are soaked all the way to her butt from her juices, and he takes more Polaroids to increase their value. As he continues fingering her to spread the stains further, she cries out, "Ah, no, not there! I'm cumming again!" She cums once more—clearly a very slutty girl. The clerk tempts her: "If you do more explicit scenes, I can pay you enough to go overseas." She replies, "As long as my face isn't shown... aahn," and starts giving him a handjob as he pulls out his bare cock. She writhes in pleasure as he stimulates her nipples. He asks, "Have you had sex recently?" She answers, "Not lately... aaaaah, uuuun..." With a dangerous look in her eyes, she takes his rock-hard cock into her mouth, licking the underside of the shaft and sucking the head with loud, slurping sounds, performing a doggystyle blowjob while seated on the sofa. Unbelievably, her left hand is busy rubbing her own pussy, making the stains even larger. When the clerk asks, "Can I go all the way like this?" she replies, "Eh, bareback is a bit scary." So he puts on a condom and slides it into her pussy after pulling her panties aside. "Aaah! It's going so deep..." He carefully thrusts, making sure his cock doesn't touch the panties—because any contact would ruin their resale value. "Uuun, it feels so good!" She orgasms, her body jerking as he pounds into her while groping her big tits. He pulls out, letting her pussy juices soak into the panties, then removes them and packs both the panties and bra into a product bag. "This seals the purchase. Now, let's continue the video." He presses his face against her wet pussy and starts eating her out. "Aaah~ no, that's too much, I'm gonna cum!" They switch to missionary-style sex on the sofa, her legs wrapped tightly around him as he plunges deep inside. "Aaaah! I love it deep!" She moans, bouncing her big ass up and down. He grabs her hips and drives his cock deep into her pussy, thrusting back and forth. "It's hitting me so hard!" She cums again, her ass cheeks twitching wildly—this slutty girl can't get enough. In regular missionary position, he thrusts forcefully, then lifts her legs and presses deep into her womb for creampie breeding. "Ah, that spot feels so good!" Her vaginal walls squeeze tightly around him as loud, rhythmic slapping sounds fill the room. When he reaches his limit, he pulls out and cums all over her stomach in a bukkake facial, then she performs cleanup fellatio to finish the video. "We'll make the payment later," he says. Hoping for repeat customers, he begins selling the panties. "Kitano Yuna #Lookalike"