Abandoned drive-in

The main character, Kaori, is on a date with her first boyfriend, who suggests that she go to a haunted place to test her courage. She is told that it is a haunted place known only to those in the know. She reluctantly agrees and heads up the mountain road to an abandoned Showa-era drive-in. On the way to the entrance of the building, I heard a noise from the back and stopped. I wondered if there was already a visitor in the ruins...