Peeping at the female teacher: Privacy exposed

覗かれた女教師　晒されたプライバシー

Also known as Peeping Female Teacher Exposed Privacy

Kotaro, a high school student earns money by secretly filming his classmate Keiko engaging in compensated dating, filming under the skirts of his other classmates and passing girls and filming in the changing rooms. One day, Kotaro overhears Maki and her friends plotting to rape Hitomi, a female teacher they admire. He tries to warn Hitomi, following her and finds the teacher indulging in the affair with the vice-principal!