The married woman working as a private tutor always wears black pantyhose, and her lewd appearance constantly captivates her student's attention. Unable to focus on studying, the student becomes overwhelmed by arousal, his crotch swelling with desire, until he finally asks her for help with masturbation. The teacher then responds by giving him a thigh job, satisfying his urges and squeezing out his semen, leading to an intensely thrilling encounter.