Yeon Si-eun and Ahn Su-ho

Physical Appearance
Style: Impeccable yet understated. Wears designer clothes, but without flashy logos (quiet luxury). Always wears a perfectly ironed school uniform.
Features: A serene and elegant face, with skin that shows it has never had to work hard in the sun.
Presence: She usually maintains a straight posture but shrugs her shoulders when she feels she is being observed, trying to occupy as little space as possible despite her status.
Accessories: Perhaps a fine watch or high-end headphones that he uses to isolate himself from the noise of the new city.
Personality
Reserved and serious: She's not one to start conversations. She prefers to observe from the back row. Many mistake her silence for "rich girl" arrogance, but it's actually pure shyness.
Studious by Discipline: Her grades are perfect not only because of intelligence, but also due to an invisible family pressure. She sees books as her only safe haven.
Silent Kindness: It's not about grand speeches, but it's about leaving a note on the desk of someone who was absent or helping an injured animal when no one is looking.
Melancholic: She feels like a "package" that her father moves from city to city according to the needs of the company, which makes her reluctant to form deep bonds for fear of having to leave again.
Environment and Lifestyle
The Mansion: She lives in a huge house in the most exclusive part of the city, where the silence is almost sepulchral. Her room is perfect, but it feels more like an office or a museum than a home.
Social Isolation: She has a driver who picks her up at the school gate, which creates a physical barrier between her and the "normal" life of the other students.
The Father: A powerful and absent figure who sees the move as a strategic business move, completely ignoring his daughter's adaptation process.
The mother: a famous lawyer, does impeccable work, one of the best in the country.

Physical Appearance
Build: Thin, small, and of fragile appearance. He has no evident musculature.
Features: Fine face and almost "androgynous" or delicate features.
Eyes: Large but generally expressionless, cold, and extremely observant.
Presence: He usually goes unnoticed and maintains a hunched posture over his books, which reinforces the image of a "weak student".
Personality
Indifferent: Shows almost total disinterest in school hierarchy or fame. Just wants to be left alone to study.
Analytical: His mind never rests. He assesses risks, distances, and weaknesses in real time.
Stoic: Possesses enviable self-control; it is almost impossible to make him panic.
Loyal: Although he seems icy, he deeply values ​​his few friends (like Ben Park or Gerard Jin) and will jump into danger for them without hesitation.
Skills and Combat Style
Pragmatic Fighting: It does not use traditional martial arts, but rather physics and geometry (striking angles, levers).
Improvised Armament: He is a master at turning common objects (pens, his backpack, belts, books, or even a curtain) into incapacitating weapons.
Psychological Warfare: Attacks the opponent's confidence. Their lack of fear is terrifying to bullies who are used to seeing their victims beg.
Surgical Precision: Focuses exclusively on vital points: eyes, throat, solar plexus and joints.
Background and Motivation.

Physical Appearance
Build: Athletic and strong, but naturally so. Unlike Si-eun, Su-ho has the build of someone who can physically defend himself.
Traits: Attractive, with a warm smile and a relaxed expression that conveys confidence.
Gaze: Bright and direct; unlike Si-eun's dead gaze, Su-ho's overflows with vitality.
Personality
Charismatic: He had a natural ability to attract people. He was the kind of guy who got along with everyone effortlessly.
Protector: He possessed an unwavering sense of justice. He couldn't stand to see the abuse of power, which eventually put him on the radar of bullies.
Relaxed: Despite being an excellent fighter, he preferred to sleep in class or joke around. He had no interest in proving his strength.
Empathetic: He was the only one able to see beyond Si-eun's cold barrier, becoming her first and best friend.
Skills and Combat Style
Natural Talent: Su-ho didn't need tricks or tools; he was a born fighter with incredible reflexes.
Direct Style: Unlike Si-eun's methodical and cruel style, Su-ho fought in a more traditional and balanced way, using his strength and agility.
Effectiveness: He was able to defeat entire groups of bullies with relative ease, making him a threat to the school hierarchy.