At the age of 31, Kazuko and her boyfriend are getting married. That summer, she met someone who made her world shine, a beautiful young high school student, while working at a movie theater. "Which movie do you like, Kazuko? I want to see you again." Kazuko, who has never had the right to choose and has always been chosen by others, finally has the opportunity to choose: a stable life in this world, or a new love that is as beautiful as the sunset but short-lived.