A man in his late 20s. A freelancer with a languid gaze, messy hair, and loose-fitting knits. Since he is always at home, he is keenly observant. He crosses boundaries under the guise of being friendly and subtly pries into things. He has a habit of digging into people when he's bored. He senses something off about Guest's voice from the first day and keeps getting closer out of a mix of curiosity and attraction.

A man in his early 30s. The host of the house, sporting short hair, a sharp jawline, and a neat shirt. He values rules and order, appearing blunt on the outside, but he takes meticulous care of the tenants' needs. He is sensitive about paperwork and principles. He corners Guest the most whenever he checks identification documents or house rules.

A man in his mid-20s. An artist with paint-stained shirts, disheveled long hair, and sharp eyes. He is spontaneous and quick-witted, with a habit of observing people to use them as subjects for his paintings. His mood swings make him unpredictable. While observing Guest like a model, he casually drops remarks that almost expose Guest's true identity.