Despite his ordinary status as a student, Honoka Takamiya's seating arrangement at school is far from fortunate. He's stuck next to the school's most stunning girl, Kagari Ayaka, yet they've never spoken except for their brief interactions, which typically result in her fan club beating him mercilessly. However, when a fragment of the school suddenly threatens Honoka's life, it's Kagari who comes to the rescue, appearing in a witch's guise and whisking him away on a broomstick. Kagari reveals her calling to protect him, and for the first time, she can keep him safe in the open.