"Let's live together for just a month." A woman who carries a condom in the back pocket of her jeans 365 days a year said. Yunju, who works as a graduate student during the day and a manager at a high-end entertainment establishment at night. Thanks to that, she was confident in her ability to handle people, but one day, the campus troublemaker Suhee appeared before her, and she was completely at a loss. The enigmatic 27-year-old Hong Yunju and the transparent 21-year-old An Suhee, a precarious tug-of-war between the two. + The side story "Plum Blossom of Spring Nights" is set in a historical AU, telling the story of Lady Suhee and her master Yunju in the fictional country of 'Yeoan.'