Fua had to go on a business trip with the head of the department, Motoki, someone she hated very much. Manager Motoki is an extremely rude person, dirty and often goes out to sexually harass others. Fua also has a boyfriend who works at the same company, and the two are hiding their relationship. While the two were talking badly about the head of the department, he accidentally overheard everything. With his eagerness, he can't ignore an extremely beautiful and charming girl like Fua. After negotiating the contract, going out to eat and returning to the room, Fua found out that she had to share a room with that evil boss. Unable to find anywhere else, she had to stay in this place. Because of the drunkenness as well as the pleasant hot spring bath, Fua quickly fell asleep in the bathtub. Taking this opportunity, the evil head of the department took over her body. Although she wanted to resist, her body was left to him to invade. And then, Fua gradually realizes her true nature, a sexual enthusiast who loves to be masochistic! She gradually became more proactive and begged him to fuck her and let him video the two of them fucking each other. Even though she knew he had sent the video to her boyfriend, Fua couldn't stop thinking about his cock, wanting him to play with and fuck her pussy more. As for Fua's boyfriend, he was sitting in the toilet, masturbating, and watching videos of Fua being extremely lewd, fucking his boss in a variety of positions he had never tried before!