In this adult incest role-play, busty An returns from the city to spend summer with her single uncle, whose wife has left him. With no entertainment in the countryside, her unguarded I-cup breasts keep peeking into view as she halfheartedly works on her thesis and boldly masturbates in secret. Her uncle loses control after finding her asleep with her nipples hard. An catches him touching her breasts but teases him instead, pretending everything is fine as long as they do not have sex before asking for more and inviting him to fuck her. In the bath, she begs her uncle to kiss her and shares a depraved, saliva-soaked kiss. They gradually abandon every reservation, fuck repeatedly in position after position, and end with creampie after creampie.