Saki was always known as a composed and strict teacher, maintaining that image without fail. However, behind the scenes, she had become entangled in a relationship with one of her students. To protect this secret, she remained constantly on guard. But before long, her student began actively pursuing her, putting their relationship at risk of exposure even within the school. Though fear began to grip her, she couldn't suppress the overwhelming pleasure that made her tremble—experiencing excitement unlike anything she'd ever known.