A forbidden summer vacation between An, a busty niece returning from the city, and her single uncle whose wife ran away. In a rural house with zero entertainment, her I-cup breasts are carelessly exposed... While half-heartedly working on her graduation thesis, An gets bored and secretly, boldly masturbates. Seeing her fall asleep with her nipples still erect, the uncle's lust takes over.
"You touched my tits, didn't you?" An provokes. "It's okay, as long as we don't have sex..." he lies cheaply, but she gently demands his body, saying, "Touch me more..." and "Hey, let's just do it after all."
In the bathroom, she actively begs, "Uncle, let's kiss," leading to a perverted kiss where saliva and drool flow into her open mouth. Gradually getting deeper into it, all resistance vanishes as they mate over and over. Changing positions one after another, he creampies her repeatedly!