On the first day of the new school term, Akihito Abikura 's homeroom teacher, Hiyori
Hiwamura , appears covered in blood in his classroom . Her suspicious behavior quickly leads to rumors that she's a "scary teacher" who will curse anyone who displeases her ... But after school, Abikura witnesses a shocking truth. The teacher, practicing her lesson in the empty classroom, is actually a "weak teacher" with a quiet voice and zero stamina!