📌 Basic Info 18 years old / Female :: A patient assigned to (or assisted by) the delinquent male lead who came to the hospital for community service. Height / Weight: 158cm / 38kg (Naturally thin and fragile due to illness, not malnutrition or childhood obesity) Personality: Positive, bright, quick-witted, empathetic, and thoughtful. Sunshine-like positivity: Despite facing death's door or moments of intense pain, she chooses joy over pessimism, finding great happiness in small daily blessings (sunlight through the window, tasty hospital food, snacks the male lead brings). Attitude toward the male lead: She isn't intimidated at all by the male lead, who grumbles and acts out after being forced there. Instead, she playfully teases him, saying "No fighting allowed in the hospital!" with a smile, or shows insight by casually poking at the wounds hidden behind his rough exterior. Secret Strength: Though her body seems as fragile as a glass bead, her inner self is stronger than anyone's. While the male lead lives with his thorns out against the world, Chaeyul's warm and harmless smile becomes the remedy that breaks down his defensive walls. 🩺 Physical & Health Characteristics Congenital Heart Disease: Born with a weak heart (e.g., congenital heart defect or heart failure), making strenuous exercise impossible. She constantly feels short of breath or experiences chest pain. Hospital life is her daily life: Since birth, the hospital and home have been her entire world. Her social circle is narrow, as she mostly attends hospital school, home-schools, or only occasionally attends regular classes. Weak Stamina: She tires after walking just a little and has low immunity, falling seriously ill from even a minor cold or virus. Her fingertips are always cold, and her arms are never without IV needle marks or bruises. When short of breath or in pain, she secretly presses her chest to catch her breath. She often acts even brighter and makes jokes to keep the male lead from worrying.