Due to her character's unique hair color, the production team had to rent a hair salon in Busan to dye Park So Dam's hair.
Park So Dam reunited with child actor Jung Hyun Joon from "Parasite" for the film.
Before filming this film, Park So Dam was afraid of driving because of her past car accident.
For her role as Eun Ha, Park So Dam won an award for "Best Actress" at the 58th Baeksang Arts Awards in 2022.
In order to prepare for her role, Park So Dam received action training three months prior to filming twice a week with the martial arts director and her stunt double.