Based on

Movies like Imôto no nioi: Yoromeki no bakunyû (2014)

Having come to Tokyo to rely on her older sister and her husband, Mariko makes a living by working part-time at a classic movie theater. She has had feelings for her brother-in-law Kenji since high school. Even though she knows that he is her sister Noriko's boyfriend, she dreams that one day he will realize her love and their love will be reciprocated. In a corner of the projection room, Mariko dozes off, listening to the sounds of the machinery...