Newly graduated and assigned as homeroom teacher, Hiyori Hiwamura wants nothing more than to connect with her students. Unfortunately, her fragile constitution and shy personality cause one misunderstanding after another. On the very first day she appears bloodied and muttering, earning her the dreaded nickname “Kowakowa Sensei” (Scary-Scary Teacher). Everyone avoids her, believing she’ll curse anyone who annoys her.

After school, Akihito Abikura witnesses the truth: his teacher is actually the weakest, most endearing person imaginable — practicing her lessons with a tiny voice and collapsing from exhaustion after just a few minutes. Moved by her earnest efforts, Akihito secretly vows to support her, volunteering as class representative to help bridge the gap between the “scary” image and the real Hiyori.

As he gets closer to the clumsy yet lovable teacher, the two become entangled in increasingly intimate and stimulating situations. Heart-pounding moments, accidental skinship, and protective instincts blossom into something deeper. This is a sweet, slightly naughty love comedy about a super-weak teacher who unknowingly casts a different kind of spell on her student — one that makes him want to stay by her side and protect her forever.