"Ms. Arimura" installs cameras in her student's room and in her own bag to seduce her student. She searches the room, finds the student's underwear, smells it, and presses it against her crotch. When she finds out that the student has been masturbating, her erotic behavior explodes. While making the student study, she caresses him, rubs her penis against his ass, and teases him... the teacher's actions escalate.