"Yui" who is a teacher at a prestigious school was masturbating in the back of the classroom during class when the stress of work accumulated and diverged. However, the pleasure of her exposure was getting more and more extreme in search of further stimulation. At that point, she is secretly filmed by a school cleaning worker while she is masturbating naked in front of a vending machine. She is blackmailed by it, and after intense SEX in her staff room, she is trained as an exposed slave. She has an exhibitionist play on the bus, a large amount of bukkake ring sex at an arcade, and public masturbation in front of the students. The whole story of a female teacher falling into the abyss at the end of lust!
