Shirota has just joined the company, and his boss is the very strict director Yuko, known for her harshness towards subordinates. Being a newcomer, Shirota frequently makes mistakes and gets reprimanded by Yuko. For this trip, Yuko decides to take him along to learn. During the trip, Yuko sees Shirota's adorableness and shyness; she particularly enjoys his embarrassed expression when he touches her hand and tries to pour her a drink. When they arrive at the hotel that Shirota booked, they discover there is only one room left. Shirota considers going out to sleep but Yuko allows him to share the room with her. Feeling a bit tired, she asks him to massage her for a while. While massaging, Shirota gets to touch Yuko's soft, smooth, beautiful body, and her huge breasts make it impossible for him to look away. A virgin like him cannot resist this deadly charm! He begins to knead her, inhaling the fragrance of her body, taking off her clothes and wanting to make love to her. Yuko tried to refuse, but since Shirota was still a new boy, she was not satisfied. So Yuko allowed him to have sex with her once. But the feeling of happiness that Shirota brought made Yuko forget everything. The two of them kept wrapping together all night until the next morning, even to be late for a flight and continued to have sex non-stop...