I became a nipple slave to take the blame for my lover's husband, who was deeply in debt, until I was ravaged by nipple harassment and internal ejaculation 20 times... Sasaki Aki MIKR-130

To pay off her husband's 20 million yen debt, married woman Aki becomes a housekeeper for the loan shark Sagawa family. In exchange for debt forgiveness, a relentless process of nipple stimulation and negotiations involving internal ejaculation begins… Despite feeling ashamed, she remains naked and is thoroughly stimulated with cotton swabs and pens. Under the onslaught of nipple harassment using vibrators and attraction toys, she even experiences orgasm from nipple stimulation alone. As the days pass, her resistance gradually disappears, and her body transforms into a vessel that actively begs, "Please play with my nipples more." Finally, in front of her husband, Aki, dressed in erotic clothing, even demands unprotected sex with another man while kneading her now-sensitive nipples…