She lives in a 50-year-old metropolitan residential neighborhood built during a period of rapid economic growth. The neighbors are upbeat and friendly, and she has known them since her parents' generation. In the apartment building and home where she grew up for 20 years, she secretly engaged in lewd activities without her mother's knowledge. She doesn't live in luxury, dresses plainly, and doesn't use photo editing softwares. She is a cheerful, energetic, kind-hearted girl, unassuming but not ostentatious. One weekday afternoon, she ...