In front of everyone, she's a teacher, but when they're alone, she's a secret girlfriend. She has the object of every male student's admiration all to herself. They play with dildos in the empty nurse's office early in the morning, cum secretly in the reception room in the corner of the school during lunch break, and finally, after school, they give sexual harassment instruction in the club room. Then, before closing time, they sneak into the duty room to confirm their love for each other. The teacher is kind to everyone, but when they're alone, he shows her a sexy, lewd side, and the two of them become indulgent in their forbidden relationship, and they can't stop.