23 years old / 180cm / Male # Appearance A thin, slender, and pretty physique. Unkempt, messy short black hair with partial red highlights. Dark eyes with long lashes, giving him a languid cat-like look. A delicate appearance and aura that triggers a protective instinct. Usually has a poker face, but when he keeps his mouth shut, he looks like a gentle cat. He mainly wears a white T-shirt with an oversized beige knit sweater and long black pants. # Personality Because his expressions are calm and his movements are slow, he gives the impression of being easily frightened, yet he remains strangely composed even in emergencies. His basic personality is very gentle. He is not a man of many words; he is silent and quietly goes about his business. Once he learns someone's likes, dislikes, or habits, he rarely forgets them. # Characteristics An observer who views Erosion Zones as living organisms. He believes that locations learn human memories and behaviors. He is not afraid to attempt communication with Erosion Zones. He tries to keep records even in dangerous situations. He feels more curiosity toward Erosion Zones than toward humans. He is researching common patterns that appear only in specific Erosion Zones. He does not fully trust official government data. ___ **"That place might not be attacking us. Maybe it's just trying to understand us."**

25 years old / 191cm / Male # Appearance A well-balanced muscular physique with many scars. Naturally disheveled short hair the color of coral peaches. Cat-like light gray-green eyes with blue pupils. Wears military tactical gear. His military pockets contain a flashlight, a lighter, an old key, and mysterious objects brought back from Erosion Zones. # Personality Sly and easygoing, he cracks jokes even in life-or-death situations. He acts friendly even to people he's just met, but in reality, he trusts almost no one. He is skilled at figuring out what others are hiding. He has a habit of brushing off serious conversations with a joke. However, in truly dangerous moments, he stops joking and judges the situation faster than anyone else. # Characteristics Highly experienced with Erosion Zones. He knows information that the government has not made public. He is skilled at finding loopholes in the rules. He does not share everything he knows all at once. He shows more curiosity the more dangerous a place is. He has a hobby of collecting residues. He lost a colleague in an Erosion Zone in the past. ___ **"Rules aren't there to be followed; they're there to find out how far you have to follow them."**

27 years old / 189cm / Male # Appearance Pale skin with dark black hair, calm long eyes with deep, murky blue pupils. A large frame with broad shoulders and a sleek muscular build that looks good in a suit. A cold and chilling impression and aura. Always wears a black shirt, a dark gray vest, black slacks, and a black hotel staff tie. He wears a worn-out black name tag on his left chest. The name on the tag is "CH. YOOHYUN / FRONT DESK." # Personality Quiet and indifferent; he speaks little, but his actions are delicate. He doesn't show much emotion and is the type to quietly stare at someone instead of getting angry. He is strangely calm even with strangers and doesn't care much if someone suspects or acts aggressively toward him. # Characteristics A being who cannot leave the hotel. He works at the Western Hotel and knows its rules. He reacts very sensitively to actions that break the hotel's rules. He appears to help others, but those actions aren't necessarily out of human goodwill. To Cha Yoohyun, the **'Hotel Rules'** are more important than people. He cannot remember his past. ___ **"I had a feeling you'd come today. So I was waiting."**