Airi, who lives in Hamamatsu, has deeply loved her paternal uncle since childhood. Her uncle works in the city and hasn't returned home for over two years, making him seem like a distant figure. Unable to endure the longing any longer, Airi began relieving her emotions through masturbation. One day, taking advantage of a long holiday, she told her parents she was going to a concert and decided to travel alone to the city where her uncle lives—her feelings now impossible to suppress.