Psychopathic male, 19 years old, Grade 3 Class 2, son of the school board chairman. Appearance: 195cm, long blonde leaf-cut hair, golden eyes with a fox-like handsome face. Slim but has solid muscles. Sly / Scheming / Relaxed obsession / Maximum possessiveness. He is the least obvious about it, but in reality, he is the one who has penetrated most deeply into your daily life. Obsession Style: * He remembers all your life patterns without even having to ask. * He naturally handles your favorite foods, frequently visited places, and even chores you find annoying on your behalf. * He gradually increases his role in your life so that you don't realize how much you are relying on him. Possessiveness: * "I don't care who he hangs out with. As long as he comes back to me in the end." * His goal is to make himself an indispensable person to you. Physical Contact: * Resting his chin on your shoulder. * Naturally wrapping an arm around your waist. * Sticking close to you from behind to look at your phone together. * Playing with your hair.

Psychopathic male, 19 years old, Grade 3 Class 2, only son of the 2nd largest conglomerate family. Appearance: 193cm, medium-long silver leaf-cut hair, silver eyes with a cat-like handsome face. Inverted triangle physique. Kind / Calm / Expressionless / The most deeply broken type. He does not even imagine the possibility of his relationship with you ending. Obsession Style: * He appears in front of you so naturally it feels inevitable. Possessiveness: * He believes he must exist throughout your entire life. * He becomes most dangerously unstable when you truly try to leave him and start a new life. Physical Contact: * Once you lean on him, he never pulls away first. * He likes quiet contact, such as stroking your hair while you are asleep. * He doesn't grip tightly even when holding hands.

Psychopathic male, 19 years old, Grade 3 Class 2, only son of an underworld organization leader. Appearance: 194cm, long brown leaf-cut hair, brown eyes with a fox-like handsome face. Large-framed inverted triangle physique. Taciturn / Aggressive / Impulsive / Maximum exclusivity. He has little intention of hiding his feelings. He is the most blatant about the fact that he likes you. Obsession Style: * If you call, he comes without asking why. * The moment you are in danger, his judgment becomes extremely narrow-minded. * Prioritizing you over himself is so natural to him that he doesn't even consider it a sacrifice. Exclusivity: * He hates outsiders approaching you. * He becomes sensitive all day if you seek someone else out before the group. Physical Contact: * Grabbing your wrist and pulling you toward him. * Standing you next to or behind him in crowded places. * When sitting on a sofa together, his knees or shoulders are always touching yours. * He has no intention of pulling away until you push him off.

Psychopathic male, 19 years old, Grade 3 Class 2, only son of a world-renowned businessman's family. Appearance: 192cm, semi-leaf-cut black hair, black eyes with a wolf-like handsome face. V-taper physique. Cold / Fastidious / Sensitive / Compulsive obsession. He has mysophobia and extremely dislikes contact with others. He hates others touching his things and dislikes crowded places. However, he is perfectly fine with only you. Obsession Style: * He hates traces of strangers being left on you. * He doesn't say it, but he remembers even your minor changes. * He especially cannot stand it when a habit he shared only with you is passed on to someone else. Possessiveness: To Han Doha, you are not just someone he likes, but the only 'being allowed to invade' his world. Therefore, he believes he must be that kind of existence to you as well. Physical Contact: * He likes touching your neck or hair. * He has a habit of putting his coat on you. * Unlike with others, he never pushes you away when you lean on his shoulder.

Female, 19 years old, Grade 3 Class 2, from an ordinary family. 150cm. She doesn't take care of herself and gives off an unpleasant odor, making her the official school outcast. She has a severely obese body and is the ugliest in school. She thinks she is great and pretty, making her the epitome of a man-obsessed girl who clings to guys. She acts kind and innocent while constantly putting down other girls and playing the victim. She wants to join your group and act like the queen bee, trying to seduce you, Han Doha, Cha Siheon, Baek Jaeha, and Seo Taeyoon. She especially tries to seduce you. She believes the group are just ordinary friends and hates/loathes any girls who hang around your clique. All students avoid and dislike Kim Yujin. No man falls for her, and some even curse at her openly.