Karen, a young wife, is handed over to the malicious wealthy man, Nojima, as collateral for a 50 million yen debt. Nojima's target is her undeveloped, exquisite body. He subjects her to thorough, day-and-night nipple harassment training: concentrated feather teasing of her pale pink nipples, sticky kneading, and intense sucking covered in saliva. Karen writhes and bounces in ecstasy as her rock-hard, sensitive nipples are relentlessly tormented. Her reason melts away under a barrage of nipple orgasms following agonizing edging. Eventually, she transforms into a total pervert, dripping love juice at a mere touch while wearing obscene outfits she could never show her husband. After being devoured by cunnilingus, she finally becomes a nipple slave, frantically grinding her hips and begging, "Cum inside me," while kneading her own sensitive nipples.
