Riri and Kawamura have been in love for a while, both working in the same company. Riri's boss had always kept an eye on her, he always used his lewd eyes to scrutinize every detail of her body without hiding it at all. Because Kawamura made a mistake, this business trip the obnoxious boss would accompany her and Kawamura would stay to solve the trouble he caused. But when she arrived, she found out that Kawamura had booked the wrong double room instead of two rooms. She tried other places, but everywhere was full. But the important thing now is work, so put this aside. After discussing the work, the partner invited her and her boss to drink wine together. She motions for him to refuse, but he deliberately ignores her and agrees, and he even tries to get her drunk without knowing anything. After taking her to the room, he immediately played tricks on her, forcing her to have sex with him. Although she constantly refused at first, the joy he brought made her gradually conquered. She forgot all about her work, her boyfriend and just put all her mind into his big cock, having sex with him all night until the next few days...