Fumika has been fond of her uncle since she was a child, and whenever she visits the countryside with her family she vows to marry him. Although her uncle knows it's just because she's a child, he becomes aroused by the sight of his niece growing up every time they meet, and secretly plays pranks on her without her parents knowing. Seeing her uncle's joy, Fumika also accepts it and grows up. After entering college and being allowed to go to the countryside alone, Fumika heads to her uncle's house, secretly excited by the idea of having sex with him without anyone to disturb her. *There are no performers under the age of 18 in this work.