Tall and slender nympho teacher gives students a naughty yet tender sex education. A fellow teacher secretly uses the teacher's pantyhose as a masturbation aid, while she takes on perverted male masochist clients in a secret job, penetrating them with a strapon. Her skilled anal fingering drives students wild, making them moan uncontrollably from pleasure. During secret after-school hours, students beg her, "Teacher, please become even more of a pervert for us♪," longing to be dominated. Bringing erotic lingerie to class, the masochistic students' desire to be controlled by her comes through clearly in this erotic tale of classroom training.