A forbidden summer vacation for the uncle, a single man whose wife has left him, and his busty niece, Anzu, who has returned home from the city. In a secluded house in the countryside with no entertainment, her I-cup breasts are exposed and exposed... Anzu, with her graduation thesis in hand, is bored and idly passing the time, and secretly yet boldly masturbates. Seeing her fall asleep with her nipples erect, the uncle is overcome with temptation. "You touched my breasts, didn't you?" Anzu teases. "It's okay, as long as we don't have sex..." he replies with a cheap lie, but then gently demands her body, "Touch them more..." "Come on, let's do it after all!" In the bathroom, she actively begs, "Uncle, let's kiss," and engages in a perverse kiss, pouring saliva and drool into his open mouth. They gradually become more and more engrossed, and her resistance disappears as they have sex again and again. They change positions one after another, and he ejaculates inside her again and again!