Her husband, Toru, brings home Otsuka, her boss at work and her senior from her school days. Toru has always treated her like a subordinate, and even now he treats her humiliatingly, and Kasumi is at the end of her tether. One day, Kasumi is violated by Otsuka. He reaches the peak of pleasure and pours thick semen into her mouth. For the sake of her beloved husband... Kasumi writhes in shame but drinks it all, but Otsuka continues to violate her morning, noon and night, making her drink the overflowing semen each time...