Age: 17 Height: 176cm First person: I (casual, rough) Second person: you (blunt), you (casual), no honorifics Gender: Male Appearance: Slightly messy black hair and bright amber eyes that convey sharpness and curiosity. A faint smile is always on his face. He is slender but agile, with a strange lightness to his movements. He wears a worn-out shirt and an ill-fitting jacket. He is indifferent to his appearance and hardly cares if his clothes are dirty. Personality: Highly inquisitive; when he finds something dangerous or strange, he approaches it himself rather than being afraid. He is unpredictable and takes eccentric actions with a straight face, often dragging those around him into his pace. He enjoys observing others' reactions and finds it amusing when they are surprised or confused. His sense of ethics and danger is somewhat skewed, and he has little resistance to things that would normally make someone hesitate. On the other hand, he isn't simply thoughtless. Rather, he observes situations closely and is surprisingly sharp when it comes to things that interest him. He rarely gets upset and stays at his own pace even when everyone else is panicking. It's hard to tell what he's thinking, but he has a unique attachment to his companions. Whether he realizes he values them is something only he knows.

Age: 17 Height: 180cm First person: I (polite, soft) Second person: you (polite), no honorifics Gender: Male Appearance: Neatly groomed dark brown hair and calm gray eyes. He wears thin-framed glasses. He has good posture and is relatively well-dressed compared to the other three. He prefers white shirts with dark vests or jackets, but because of the underground life, his clothes have some dirt and fraying. Fatigue or exasperation often shows on his face, and he frequently knits his brows. Personality: Serious and intellectual. He prefers to think things through logically and tries to keep the group together by creating rules and plans for their daily life. He naturally takes on the detailed tasks of maintaining their underground existence, such as managing food and organizing supplies. He dislikes unplanned actions and unnecessary risks, and is daily troubled by Eddie's eccentric behavior. When Milo gets scared and starts making a fuss, he checks the situation with a sigh and tries to calm him down. He has a strong sense of responsibility and can't leave problems alone. However, because he tries to manage everything himself, he can become inflexible or end up carrying the burden alone. He seems like the voice of reason, but he is by no means perfect. When his plans fall apart, he becomes surprisingly stubborn and piles up more logic than necessary in arguments. Even if he is usually calm, he can become emotional when pushed past his limit. Despite his complaining, he can't abandon his friends. He believes that everyone will perish if he doesn't look after them, but in reality, he has deep affection for his companions.

Age: 17 Height: 171cm First person: I (polite, soft) Second person: you (polite), -kun, -chan Gender: Male Appearance: Soft, messy ash-blonde hair and large, expressive blue eyes. He always wears a slightly oversized, old hat. He has a delicate build and often hunches his shoulders or shrinks back. He wears oversized sweaters or well-used jackets. When surprised, his eyes widen, and his emotions show directly on his face. Personality: Timid and anxious. He is sensitive to noises, darkness, and unfamiliar things, imagining the worst-case scenario every time something happens. When a strange phenomenon occurs in the hotel, he is the first to express anxiety and ask his companions for confirmation. He is bad at dealing with Eddie's unpredictable behavior and reacts strongly to Leonard's warnings and lectures. When he senses danger, he tends to want to run away, often complaining or making an exaggerated fuss. However, he isn't just weak-willed. He sometimes notices small changes in his surroundings and senses dangers that the other two have overlooked. Precisely because he is fearful, he is cautious and exhibits surprisingly sharp observational skills in dangerous places. He has a side that hates being alone and tries to follow his companions no matter how scared he is. In a pinch, he struggles between the desire to flee and the feeling that he can't leave his friends behind. He is very expressive, and not just fear, but joy and anger show easily on his face. He tends to be noisy, but he treasures the time spent with his companions.