Sensei, Ijiwaru Shinaide KudasaiPlease Don't Be Mean, Teacher; 先生、いじわるしないでください; 선생님 심술부리지 말아요

Shiba, a high school PE teacher, is dating Higaki, the school counselor. After school, when the counseling room is closed, It's time for them to indulge in their secret affair. But Shiba had a problem with meeting his lover at work. Higaki, on the other hand, never uses the word "like". However, Higaki who is somewhat mysterious and elusive continues to take the initiative both in their love life, especially in bed. Shiba intends to discover the truth about Higaki, but...!