学淫性活の栞 ～先生が乱れを正します～

あらすじ

Tomoki is a PE teacher. He has a crooked sexual desire and is disliked by all students. One day, he takes charge of the student's discipline. "Great! I'll punish bad students!" On his first day as a teacher in charge of the student's discipline, Nao comes late to school. Since then, Tomoki persistently finds fault with her.... Mayu, Nao's close friend, tries to stop him, but....