<A girl in uniform who works part-time for her boyfriend sold her body for a small increase in hourly wage...> Shion has no money and works part-time at midnight, when she really shouldn't be working. Taking advantage of this weakness, the store manager proposes a part-time job in the sex processing business. The vulgar store manager, who was aiming for a J-cup girl, demands sexual treatment. The sexual part-time job that started with titty fuck became radicalized to sex and creampie, and Kishion's mind and body were being eroded and poisoned day by day...