Exist Within (2022) (korean) May 2026

: As her obsession grows, Ho-kyung notices her presence. What starts as a hunt for a story descends into a tense game of cat-and-mouse that uncovers a dark reality about her neighbor. Key Cast & Production

(Korean: Sais-sori / 사잇소리) is a 2022 psychological thriller directed by Kim Jeong-uk. It explores themes of urban claustrophobia, obsession, and the thin line between creative inspiration and dangerous voyeurism. Core Premise & Plot

Reviewers highlight the film's "slow-burn" tension and effective use of claustrophobic framing to enhance the feeling of paranoia. However, some viewers have criticized the protagonist's lack of "survival skills" and the script's reliance on common thriller tropes. Exist Within (2022) (Korean)

Amazon Prime Video (purchase/rent or free with ads in some regions). Plex and Hoopla (free options). Exist Within (2022) - IMDb

as Eun-soo: The protagonist whose desperate curiosity leads her into danger. : As her obsession grows, Ho-kyung notices her presence

The story follows , an aspiring but struggling writer living in unit #401. Desperate for a winning idea for a screenplay competition to help her family's finances, she becomes obsessed with a persistent "thudding" noise coming from the apartment above her, unit #501.

as Ho-kyung: The enigmatic and increasingly threatening upstairs neighbor. Director : Kim Jeong-uk. Runtime : Approximately 106–107 minutes. Critical Reception It explores themes of urban claustrophobia, obsession, and

: Encouraged by a friend to write about her surroundings, Eun-soo begins tailing and wiretapping her neighbor, Ho-kyung , hoping his secrets will inspire her work.