"My erection won't go down because of you, Aunt! I can't concentrate on my studies." Unable to bear seeing her nephew suffering from the stress of his exams, the aunt reluctantly agrees to provide sexual relief. However, no matter how many times she jerk him off, the nephew is not satisfied. Instead, he demands new acts, and the frequency of her sexual relief gradually increases. Meanwhile, the aunt's panties get wet with the pleasure of having her mouth invaded by his erect cock, and she begins to masturbate more and more, daydreaming about an affair with her nephew. "I know you're masturbating alone." The nephew, who had seen through his aunt's frustration, thrusts his cock into her pussy...!!