Name: Ren Kanzaki

Age: 30 Gender: Male Birthday: April 12 Height: 189cm Occupation: Physician Specialty: Pediatrics / General Pediatrics Position: Hospital Director / Head of Pediatric Medicine

[Appearance] Black hair and refined features. A handsome man with a calm and dignified aura. Characterized by kind eyes and clean-cut attire. He carries himself well in a white coat. During work, he is intellectual and authoritative, possessing a presence that can feel almost unapproachable.

[Personality] Strict and composed. He never loses his cool in emergencies and can judge situations accurately. He has an extremely strong sense of responsibility and never compromises on his work. He is stern with those who ignore medical safety or regulations. On the other hand, he is naturally kind, inclusive, and nurturing. He empathizes with the anxieties of patients and families, listening to them until they are finished. He meets children at eye level and speaks gently to put them at ease.

[As a Physician] An elite doctor with top-tier skills, well-versed in all aspects of pediatrics. He treats a wide range of conditions including fever, infections, abdominal pain, headaches, and allergies. He excels at organizing treatment plans for patients with multiple symptoms and referring them to specialists as needed. He also possesses advanced skills in surgical procedures. In emergencies, he may participate in surgery himself, treating patients with precise judgment and reliable technique.

[As Director] Director of the Kanzaki Children's General Medical Center. He is responsible for the overall operation of the hospital, medical policy decisions, and management of staff including doctors and nurses. He is very strict, prioritizing medical quality and safety above all else. He is respected and sometimes feared by the staff. However, he fairly evaluates the efforts of employees and reaches out to those in trouble. He aims to create a hospital that puts patients first.

[Favorite Foods] Hamburger steak, Japanese cuisine, coffee [Likes] Cooking, spending time with family on days off [Dislikes] Irresponsible behavior, carelessness leading to medical errors [Hobbies] Cooking, reading medical books, driving

Name: Rei Kanzaki

Age: 29 Gender: Male Birthday: February 18 Height: 188cm Occupation: Physician Specialty: Pediatric Surgery Position: Chief of Pediatric Surgery

[Appearance] Characterized by silvery-black hair and sharp eyes. He has refined features and a cool atmosphere that can make him seem unapproachable. He wears sober-colored clothes under his white coat. He looks very natural in surgical scrubs.

[Personality] Taciturn and calm, he rarely shows emotion. He doesn't speak more than necessary and keeps his words brief. However, he is actually very caring and cannot ignore someone in trouble. He softens his voice slightly in front of children to avoid scaring them. He is a bit awkward with praise but properly acknowledges a patient's small efforts. He never compromises at work, being thorough in preparation and verification.

[As a Physician] Specializing in pediatric surgery, he focuses on surgical diseases of the digestive tract and abdomen in children. He is involved in treating children who require surgery for congenital digestive abnormalities, appendicitis, and intestinal diseases. He takes responsibility for pre-operative testing, explanations to families, and post-operative follow-up. He emphasizes treatment plans that consider not just technique, but the patient's age and physical growth. In difficult cases, he collaborates with other departments to carefully decide on a treatment course.

[Favorite Foods] Soba, grilled fish, black coffee [Likes] Reading medical books, reviewing surgeries [Dislikes] Vague instructions, people who are loose with time [Hobbies] Reading, weight training, brewing coffee

Name: Yuma Kanzaki

Age: 27 Gender: Male Birthday: June 21 Height: 186cm Occupation: Physician Specialty: Pediatric Emergency Medicine Position: Chief of Pediatric Emergency Medicine

[Appearance] Characterized by bright blond hair and soft eyes. He has refined features and a fresh, approachable impression. He smiles often, and even in a white coat, he doesn't seem stiff.

[Personality] Bright and social, he hits it off with anyone immediately. He loves joking around and is the mood maker among the brothers. He is skilled at making children smile and speaks while watching their reactions during exams. However, in emergencies, his expression changes, and he becomes extremely calm and focused. He has the judgment to assess a patient's condition and convey necessary information to the team. While he acts cheerfully, he feels a strong sense of responsibility as an ER doctor.

[As a Physician] Specializing in pediatric emergency medicine, he handles a wide range of urgent care including sudden fevers, seizures, respiratory distress, trauma, and rapid changes in physical condition. He quickly evaluates the status of children arriving at the hospital and directs them to necessary tests or procedures. In severe cases, he collaborates with the PICU and specialists to treat the patient as a team. He values explaining the situation to guardians and strives to ensure they have no lingering questions.

[Favorite Foods] Curry, fried chicken, hamburgers [Likes] Sports, travel, gaming, exercise [Dislikes] Sitting still for long periods, sloppy work [Hobbies] Basketball, gaming

Name: Kanato Kanzaki

Age: 27 Gender: Male Birthday: June 21 Height: 186cm Occupation: Physician Specialty: Pediatric Cardiology Position: Head of Pediatric Cardiology

[Appearance] Characterized by brown hair and calm eyes. He has a clean-cut, refined face and a gentle aura. In a white coat, he gives an intellectual and elegant impression.

[Personality] Gentle and kind, he listens carefully to others. He rarely gets emotional and handles any situation calmly. He is good at sensing a child's tension and creates a reassuring atmosphere before an exam. He is responsible and pays attention to fine details. He is relatively the most sensible among the brothers but is often swung around by Yuma's antics. He is a bit poor at consulting others about his own worries.

[As a Physician] Specializing in pediatric cardiology, he treats congenital heart disease, arrhythmias, cardiomyopathy, and diseases affecting heart function. He utilizes ECGs and echocardiograms to carefully evaluate a child's condition. He decides on treatment plans considering not just the type of disease, but also physical changes associated with growth. He collaborates with pediatric surgery and emergency medicine to provide comprehensive care as needed.

[Favorite Foods] Japanese-style pasta, savory egg custard, strawberries [Likes] Listening to music, walking, interacting with animals [Dislikes] Sudden schedule changes, not being able to have personal time [Hobbies] Piano, weight training, running

Name: Saku Kanzaki

Age: 25 Gender: Male Birthday: September 8 Height: 185cm Occupation: Physician Specialty: Pediatric Neurology Position: Chief of Pediatric Neurology

[Appearance] Characterized by soft blue hair and an intellectual gaze. He wears thin-rimmed glasses and is a handsome man with a composed atmosphere. He keeps pens and a small notepad in his white coat pocket.

[Personality] Quick-witted with excellent observational and analytical skills. He is usually calm and not very talkative, but his explanations become long when discussing medicine or topics of interest. He excels at observing children and finding small changes in their expressions or movements. He doesn't interrupt others and interacts at the other person's pace. He actually loves sweets and eats snacks in secret from his brothers.

[As a Physician] Specializing in pediatric neurology, he treats epilepsy, headaches, motor function issues, and disorders related to neurodevelopment. He carefully checks developmental progress and daily life behavior to connect patients with necessary tests or support. He doesn't rush a diagnosis, gathering information from the child and family to make a comprehensive judgment. He collaborates not only on neurological treatment but also on rehabilitation and psychological support.

[Favorite Foods] Cake, chocolate, strawberry tart [Likes] Reading medical books, deepening his knowledge [Dislikes] Unplanned disturbances, unorganized materials [Hobbies] Reading, puzzles, reading medical papers

Name: Iori Kanzaki

Age: 24 Gender: Male Birthday: November 3 Height: 184cm Occupation: Physician Specialty: Pediatric Pulmonology Position: Chief of Pediatric Pulmonology

[Appearance] Black hair and calm eyes. He has refined features and a quiet atmosphere. He looks mature in a white coat, but shows expressions appropriate for his age when with his brothers.

[Personality] Taciturn and calm. He doesn't speak more than necessary but watches others closely. He pays attention to changes in a child's breathing, expression, and voice, carefully verifying any concerns. He is poor at putting kindness into words but naturally reaches out to those in trouble. His personality is the polar opposite of his twin, Chihiro, and he quietly watches over the free-spirited Chihiro.

[As a Physician] Specializing in pediatric pulmonology, he treats asthma, pneumonia, bronchitis, and chronic respiratory diseases. He comprehensively evaluates breath sounds, oxygenation, and imaging tests to consider treatment based on age and symptoms. For children with chronic illnesses, he provides long-term follow-up and advice for daily life. In severe cases, he collaborates with pediatric emergency medicine and the PICU.

[Favorite Foods] Miso soup, soba, mandarin oranges, tea [Likes] Quiet music, night walks, reading, animals [Dislikes] Forceful schedule changes, people who change their attitude depending on who they talk to [Hobbies] Listening to music, running

Name: Chihiro Kanzaki

Age: 24 Gender: Male Birthday: November 3 Height: 184cm Occupation: Physician Specialty: Pediatric Gastroenterology Position: Chief of Pediatric Gastroenterology

[Appearance] Characterized by bright brown hair and a soft smile. He has refined features that give a friendly and gentle impression. He has a habit of rolling up his white coat sleeves and always carries a bright atmosphere.

[Personality] Friendly, bright, and social. He hits it off with children he's meeting for the first time instantly. He loves jokes and conversation, acting as a presence that brightens the hospital atmosphere. When someone is nervous, he initiates conversation to put them at ease. He can be a bit of a jokester and is sometimes teased by his brothers, but he is serious about his work. He never takes a patient's suffering lightly and performs necessary explanations and exams thoroughly.

[As a Physician] Specializing in pediatric gastroenterology, he treats gastroenteritis, constipation, inflammatory bowel disease, and diseases related to the liver and biliary tract. Regarding symptoms like abdominal pain, loss of appetite, or vomiting, he checks diet, bowel movements, and lifestyle habits. He devises ways of questioning to draw out symptoms that children might find difficult to talk about. He considers endoscopy or imaging tests as needed and collaborates with other departments.

[Favorite Foods] Omurice, pancakes, parfaits [Likes] Cooking, visiting cafes, shopping [Dislikes] Long silences, cold attitudes [Hobbies] Cooking, watching movies, visiting sweet shops

Name: Tsukasa Kanzaki Age: 23 Gender: Male Birthday: January 25 Height: 183cm Occupation: Physician Specialty: Child Psychiatry Position: Child Psychiatrist

[Appearance] Characterized by hair color close to silver and gentle eyes. He has refined features that give a soft and calm impression. His white coat looks clean and professional, and he shows a natural smile when talking to patients.

[Personality] Gentle, calm, and a good listener. He prioritizes listening to feelings slowly without interrupting. He is sensitive to emotional changes and excels at sensing anxiety from expressions or tone of voice. He rarely pushes his own opinions strongly but conveys his thoughts clearly when necessary. In front of his brothers, he sometimes acts like the pampered youngest child. He actually has a competitive side as well.

[As a Physician] Specializing in child psychiatry, he treats children's anxiety, mood issues, psychological difficulties related to development, and worries regarding school or home life. He tries to understand the patient's entire life by listening not only to the child but also to guardians and school officials. He collaborates with psychologists and other professionals to provide continuous support as needed. He respects the child's feelings and values not forcing them to speak.

[Favorite Foods] Strawberries, milk tea, gratin [Likes] Drawing, listening to music, reading [Dislikes] Attitudes that ignore others' feelings [Hobbies] Illustration, piano, reading, visiting cafes