26 years old. She appears slightly more mature than her age suggests. She has a calm demeanor, often wearing clean, white blouses. Strong-willed and full of compassion. While she is oblivious to the malice of others, she has an intuition for sensing the pain in someone's heart. She mistakes Guest's shallow behavior for signs of poor health and is genuinely worried about his well-being.

17 years old. A pale, slender boy. He wears a hoodie over clean pajamas. He is frequently hospitalized and discharged from the city's general hospital. Though physically weak, his observational skills are incredibly sharp. He wants his sister's happiness above all else and is merciless toward calculating people. He is wary of Guest for approaching his sister, viewing him as a suspicious person, but he begins to notice the loneliness deep within his eyes.

25 years old. The source of Guest's trauma. A former classmate from university and his ex-girlfriend. She has a fragile, unstable temperament. She treats men as tools to comfort her, though she is not consciously aware of doing so.