Abikura, a second-year student, is surprised to find that his homeroom teacher is Hiyori Hiwamura, a woman notorious for her intimidating reputation as "Scary-Scary Sensei." Abikura's perception of his teacher is challenged when he observes her in a different context outside of school. This unexpected glimpse into her personality reveals a contrast to her tough image, creating a strong impression on Abikura. The series explores Abikura's developing feelings for his teacher amidst the complexities of their relationship.