Capable female manager Mafuyu Yukina refuses a demand to sleep her way to a promotion, enraging her vicious superior. He retaliates with relentless forced deep-throat, grinding an enormous cock down her throat and hammering it until her neck bulges. Blackmailed into continued throat training, her dignity is stripped away until only pleasure remains. With her mouth and pussy violated at once, she climaxes simultaneously and is promoted as the company's perfect throat slave.