One day, Hana Haruna, an intelligent and talented boss who works hard as the general manager of the third sales department, takes a young male subordinate who is a new recruit in the department on a two-day, one-night business trip to the North Kanto branch office. As usual, after finishing her work efficiently, she heads to the city hotel in front of the station where she is staying, but as part of the company's cost-cutting measures, she finds that instead of two single rooms, she has been booked in one twin room shared by men and women...!