MIKR-130 | Taking the place of my debt-ridden, beloved husband, I was turned into a "nipple slave"—and now, I’m being broken down by 20 rounds of nipple-focused sexual harassment and deep, internal ejaculations… — Aki Sasaki

Aki, a married woman, becomes a housekeeper for a loan shark named Sagawa to settle her husband’s 20-million-yen debt. In exchange for the debt’s cancellation, a repayment process begins—one defined by relentless stimulation of her nipples and unprotected, internal intercourse…

Overcoming her shyness, she strips completely naked, allowing her nipples to be thoroughly sensitized through caresses with cotton swabs and brushes. Using vibrating wands and suction toys, her tormentor focuses exclusively on her nipples, driving her to reach a climax—complete with ejaculation—triggered solely by that stimulation. As the days pass, her resistance fades; her body transforms, and she begins to beg for more, pleading, "Please, keep playing with my nipples." Eventually, dressed in a provocative, erotic outfit right in front of her own husband, she begins kneading her now hyper-sensitive nipples herself—and demands to engage in raw, unprotected sex with another man…