Yumi, a pure and reserved married pharmacist, gets completely conquered by her sleazy former classmate during a daytime affair. Her strict boundaries crumble with every raw thrust, and her sensitive body can't resist the intense pleasure. Soon she spreads her legs wide, eagerly accepting load after load of creampie. From shy resistance to total surrender, this married woman gets filled in the back of the pharmacy, delivering a taboo, pulse-pounding tale of infidelity and erotic downfall.