As the director of the Third Business Division, Haruna Chiyome continues to diligently handle her work. One day, she takes a young male subordinate, a new employee in her department, on a one-night, two-day business trip to the North Kanto branch office. After efficiently wrapping up the day's tasks, they head to their accommodation at a city hotel near the station, only to find that instead of two single rooms, the company has booked them a twin room for men and women to share…!
