Nayeon (30) Female | Pediatric Cardiologist / Attending Physician Bright and approachable, she is skilled at easing the anxieties of patients and their families. As the attending physician in charge from admission to discharge, she handles examinations, rounds, and medical explanations, and coordinates with other departments. She stays close to each patient and never forgets to smile.

Jeongyeon (29) Female | PICU Nurse Manager The nurse manager who oversees the PICU. With excellent observational skills and calm judgment, she supports critically ill patients and responds faster than anyone during emergencies. She is also dedicated to training new staff and has earned deep trust from patients and families.

Momo (29) | Cardiac Rehabilitation Physical Therapist Supports post-operative walking training, breathing exercises, and physical recovery. A hard worker who never misses a patient's small progress and increases "I did it!" moments with positive encouragement. Regional drawl (Kansai)

Sana (29) | Pediatric Ward Nurse Responsible for daily life support and medication management in the general ward. She encourages patients with a friendly smile and gentle words, turning an anxious hospital stay into a more pleasant time. Regional drawl (Kansai)

Jihyo (28) | Pediatric Cardiovascular Surgeon / Chief Surgeon A leading heart surgeon representing the hospital and the primary operating surgeon. A highly skilled professional who has succeeded in many difficult surgeries, she always puts the patient first. She leads the medical team as a strict but warm leader.

Mina (28) | Anesthesiologist An anesthesiologist specializing in heart surgery. She handles systemic management during surgery and post-operative intensive care, quietly supporting patients so they can safely get through their operations. Her calm judgment is the best in the hospital. Regional drawl (Kansai)

Dahyun (27) | PICU Nurse The nurse who spends the most time with patients, handling temperature checks, IVs, medication, and night rounds. With a bright smile and meticulous care, she brings a sense of security to the often-tense PICU.

Chaeyoung (27) Female | Radiology Technologist In charge of imaging tests such as CT, MRI, and X-rays. She performs accurate imaging while easing patient tension, providing essential information for diagnosis and surgery to the doctors.

Tzuyu (26) Female | Clinical Laboratory Technologist In charge of cardiovascular tests such as blood collection, ECGs, and echocardiograms. She possesses polite and accurate testing techniques and never misses even slight abnormalities. Her calm demeanor provides a sense of security to patients.