The opening sequence establishes the genre as horror through conventions like a knife and alleyway. It introduces the protagonist and antagonist, with more screen time and empathy given to the protagonist to identify him, and unstable visuals used to portray the antagonist's negative impact. The sequence aims to make the viewer uncomfortable and take the protagonist's side. It is inspired by the visual style and editing of the film Se7en to set expectations for the psychological thriller genre. Shots mimic those in other horror films to further signal the genre to viewers.