Nishimura is a clumsy employee who frequently makes mistakes. This time, Nishimura filled in the wrong name on the contract, and not knowing what to do, his direct superior Erisa promised the partner that she would bring a new contract the next day. To feel more at ease, Erisa will also accompany Nishimura, and she assigned him the task of booking airplane tickets and hotels. The next day, thanks to Erisa, everything went extremely smoothly. However, when they got back to the hotel, Nishimura made another mistake by only booking a double room. With no other choice, the two had to share a room for one night. They both drank and chatted with each other. When Erisa learned that Nishimura was still a virgin, she wanted to take away his 'virginity.' And so, throughout that night, Nishimura found himself with the female boss he had always dreamed of, someone he never thought would belong to him...