Hajime is a virgin, currently suffering from the exploitation of a wicked boss. One day, a beautiful angel arrived at the company, and the chairman announced that she is Hajime's superior. It turns out she is the chairman's mistress. The two continuously flirted with each other all day, even carelessly performing lewd acts right in front of the employees. Today, Hajime had to work overtime to complete a sudden task assigned by the chairman that he was ordered to finish by noon tomorrow. While he was working, Moe suddenly returned to the company looking for something. Because she was wearing a short dress, when she bent down, her T-back underwear was revealed, making Hajime unable to blink. Unfortunately for him, Moe noticed. But knowing Hajime is a virgin, Moe deliberately teased and seduced him. How could a virgin resist Moe's charm? And that night, Hajime was made to climax a total of ten times by Moe! In the following days, Hajime continued to work overtime, while Moe kept coming back for things, and the two of them became inseparable throughout the night...