3-ji no Itazura

A middle-aged man runs a dental clinic and lives a quiet, routine life. One afternoon, after his morning appointments, a young woman visits. She is playful and mischievous, asking him personal questions about relationships and family dynamics. The woman is his niece, Koyune, a college student. She speaks with a teasing tone and a bold, occasionally suggestive manner. Despite her behavior, he insists that she is simply his niece and nothing more.