One night, Kaede is accidentally locked out in the hallway at work. Shioya, who she has a crush on, just happens to pass by, resolving the situation, and she ends up staying the night at his house!​However, Shioya's roommate, Mizoguchi, comes home and the two instinctively hide in the closet. Surprisingly, this roommate is Kaede’s direct superior!​Kaede's heart pounds as they press against each other in an attempt not to be noticed... when Shioya's lips touch Kaede's chest…​ Kaede is overjoyed with the turn of events bringing her closer to Shioya, whom she secretly admires. Shioya looks at her with cool but kind eyes. Then Mizoguchi, his roommate, gets involved, marking the beginning of a love triangle.​