It is a horror masterpiece that masterfully blends Korean folklore, police intrigue, and supernatural horror. The atmosphere of the film is incredibly dense, filled with meticulously built tension, enveloping the viewer in a world of mystery and darkness. The performances are exceptional, especially that of the protagonist, who manages to convey a sense of growing desperation that feels very real. The plot is complex and full of unexpected twists that keep the viewer on the edge of their seat. In addition, the film addresses deep themes such as faith, doubt, and the internal struggle of good versus evil, which adds a layer of depth that elevates the experience beyond simple terror. It is a film that leaves a lasting impression and deserves to be seen more than once to capture all its nuances.