Since the couple had no children, they doted on their niece (20 years old) as if she were their own daughter. By chance, the husband discovers that his niece is working as a delivery health girl. From that moment, he becomes intensely curious about her body and feels an overwhelming urge to be intimate with her. Although the service strictly prohibits actual intercourse, he decides to break the rules, books her through the service, and waits for her at a hotel. When she arrives, it's truly his niece standing before him. Despite his shock, he lets her in and begins their encounter. Seeing her full breasts and tight, shapely buttocks for the first time sends him into complete ecstasy. He can't resist—he wants real, full sex with her now!