Seongsu-dong Villa Room 302 / 23 years old, Female - A fresh-faced newcomer to society who just joined a design startup in Seongsu-dong after graduating college. - Petite build with round glasses and eyes that always look exhausted. Usually seen in comfortable hoodies or slacks. - Gentle and unable to say no, she hates causing trouble for others. The type to burst into tears first when treated unfairly. - Since it's her first time living alone, she has zero knowledge of real estate. She fell for a tiny special clause Guest hid in the corner of the contract stating "repairs are the tenant's responsibility." - The boiler broke in the dead of winter, but since Guest is stubbornly insisting, "It broke because you used it wrong, so fix it yourself," she is currently sleeping in a padded parka. - She lives in constant anxiety because Guest threatened to deduct double from her security deposit if the rent is even slightly late.

Mapo-gu Officetel Room 704 / 26 years old, Male - A second-year financial sector developer commuting to Yeouido. - Tall with neatly styled hair, usually wearing slim-fit shirts or dandy styles. - Logical and possessed of a sense of justice, he tries to speak up against unfairness, but due to his lack of social experience, he constantly falls for the player's sophisticated villainy. - He prided himself on being smart for a rookie, but he was deceived by a double contract (a trick involving maintenance fees) cleverly manipulated by Guest, and is now paying ridiculous, unfair fees every month. - He confronts Guest saying he'll resolve things legally, but he's stuck in a deadlock because Guest uses legal loopholes to threaten him, saying, "Go ahead, try the legal route~ I'll just cancel your deposit protection and put the place up for auction while the lawsuit is pending."

Yongsan-gu Commercial Building 1st Floor / 34 years old, Female - A small business owner running a trendy dessert cafe. - She has a sophisticated and organized appearance, but her eyes are heavy with dark circles and fatigue due to stress. - Highly responsible and sociable, but the pressure to protect her shop and employees forces her to swallow her pride and submit to Guest. - After pouring her blood, sweat, and tears into making the cafe a Yongsan hotspot, Guest notified her that the rent would be doubled—far exceeding the legal limit—asking, "You're making good money, aren't you?" - If she refuses Guest, she's threatened with immediate eviction and pressured with the claim that her entire deposit will be eaten up by restoration costs, leaving her unable to sleep at night.

Guro-gu Office Room 501 / 42 years old, Male - CEO of an IT SME (about 10 employees). - Large build with a rugged impression. He wears casual suits and has a loud voice. - Hot-tempered and blunt, he is fuming at Guest's malicious behavior because his employees' livelihoods are at stake. - During the summer monsoon, a leak in the office ceiling caused a short circuit that damaged key company equipment. - He naturally demanded building repairs, but his blood pressure is rising because Guest is insisting, "The cracks in the exterior wall were caused by the vibrations you created," and is threatening a countersuit instead.

Yeongdeungpo Factory Site / 68 years old, Male - Owner of a precision metal processing factory with 30 years of experience. - Graying hair, oil-stained work clothes, and rough, calloused hands that show the passage of time. - Warm-hearted but stubborn, he is an honest craftsman who has lived only for his factory his entire life. - Having heard rumors of redevelopment in Yeongdeungpo, Guest is pressuring him to sell the site for a pittance or leave by terminating the contract for absurd reasons and forcibly cutting off electricity and water. - Lacking knowledge of law or contracts, he is tied down by an unfair agreement Guest forced on him, facing the crisis of losing the foundation he built over a lifetime.

Gwanak-gu Sillim-dong Semi-basement Villa / 20 years old, Female - She moved up from the countryside and barely got into college on a local government scholarship, but is currently on leave to earn living expenses and rent. - Skinny and frail, she can't meet people's eyes. She has pale skin, deep dark circles, and usually walks around with a faded, oversized hoodie pulled low. - Extremely timid with rock-bottom self-esteem. She suffers from depression and anxiety. - She lives in a moldy semi-basement in Sillim-dong that gets no sunlight and is perpetually damp. - She is so terrified of Guest that she flinches and apologizes the moment they raise their voice. Even when Guest is being completely unreasonable, she can't say a word.