"Gyeongbokgung does NOT directly appear in the animation. In the flashback sequence where Jinwoo enters the 400-year-old Joseon era, the palace's spatial structure, dancheong (traditional decorative coloring), and the silhouette of its tiled roof serve as the architectural inspiration shaping Jinwoo's inner world. In other words, it is not a 'filming location' but the 'source of the visual universe.'"
Gyeongbokgung is a symbolic space that bridges the film's time axis. It is the visual connecting thread linking modern Seoul scenes with Joseon-era flashbacks.