This is a story about an office lady in the Showa era, when mobile phones, PCs, and even televisions were not yet widely available. Nana works as an office lady at a certain company. Women still have a low status within the company, and their work consists mostly of making tea and doing odd jobs. One day, her boss finds out about the debt her father made... She reluctantly accepts her boss's request to make her feel good in exchange for shouldering the debt. Although she was reluctant at first, she gradually began to feel pleasure at the smell of the choking male standing tall in front of her. Using her voluptuous breasts, she uses her voluptuous breasts to squeeze the bulge that swells up so much that it can't fit in her mouth, and in the end, a large amount of semen is released into her mouth. Nana drinks it as she is told, with a look of both agony and ecstasy as she tastes the taste of the seed for the first time. The company president ends up seeing such an affair. He is given an unreasonable amount of compensation, and is even forced to become the company president. Nana responds to the president's tongue and fingers crawling all over her body by swaying her plump breasts. When Nana's underwear is stripped off and her red, engorged secret flesh is exposed, whether it's from embarrassment or pleasure, Nana's secret meat overflows with unstoppable love juices, wetting the sheets. Nana's sense of self collapses as she is caressed for a long time, and she transforms into a female. She asks for the cock herself and climaxes repeatedly, making her moans of pleasure echo throughout the room. Every time the president moves his hips, Nana's body trembles and his thick cock penetrates deep inside her secret pot. The president finally reaches the limit of his patience and ends up inside Nana. By the time the milky liquid, a mixture of semen, love juice, and saliva, was flowing down from the vagina that opened her mouth sloppily, her body and soul became the property of the president...