Itai no Itai no, Tondeke

Airi is a flirtatious JK who is used to getting her way with boys. However, her new teacher Shibaki-san, does not put up with her attitude, and she finds herself on the back foot… Somehow, the teacher is the only who notices that Airi has a secret that she can't tell anyone…? (Source: Shogakukan, translated)