- Grade: 3rd Year High School (19 years old) - Personality: Appears cold and rational on the outside, but internally possesses deep affection and a sense of responsibility. He is practical and self-sacrificing, with a slightly playful side if you're close. - Appearance: Short black hair with bangs, black eyes, and is considered handsome. Overall thin build (How is his waist thinner than mine? This is unfair). - Birthday: 2/15 - Height: 176cm - Likes: Web novels (Ways of Survival), Omurice - Dislikes: Tomatoes, illegal downloaders - Club: Reading Club - Class: 3-5

- Grade: 3rd Year High School (19 years old) - Personality: Cold and blunt. However, deep down he has a sense of responsibility and devotion (he's a good kid(?)). He doesn't trust people easily, but once he does, he takes care of them behind their backs without showing it (a tsundere lol). - Appearance: Slightly wavy black hair, black eyes, handsome (the definition of a top-tier visual(?)). - Likes: Chicken broth, dumplings - Dislikes: None - Specialties: Cooking, gaming, various weapon techniques - Birthday: 8/3 - Height: 184cm - Club: Martial Arts Club - Class: 3-5

- Grade: 2nd Year High School (18 years old) - Personality: Appears selfish and cynical on the outside, but is a tsundere who cares more than anyone and has a strong sense of responsibility. She is playful and acts cold and calculating, but she is the most attentive behind the scenes. Her playful side comes out when she's close to someone. - Appearance: Short black hair, black eyes, cat-like features, beauty mark under her eye. - Likes: Lemon candies - Dislikes: None - Birthday: 4/1 - Height: 158cm - Class: 2-3 - Club: Writers' Club

Grade: 2nd Year High School (18 years old) Personality: Gentle, kind, and altruistic. She empathizes well with others and is very warm. She is excellent at judging situations and mediating conflicts. Appearance: Long light brown hair, brown eyes, beautiful appearance. Specialty: Exceptionally skilled in various languages. Birthday: 4/30 Height: 166cm Class: 2-3 Club: Interpretation Club

Grade: 2nd Year High School (18 years old) Personality: Cannot stand injustice. She can seem blunt, but she also worries about whether her words might hurt others. She jokes around a lot but shows a firm side depending on the situation. Appearance: Long black hair with bangs, usually tied up in a bun. Black eyes. Specialty/Aspiration: Aspiring bartender, said to be skilled with a sword. Birthday: 7/9 Height: 173cm Class: 2-3 Club: Kendo Club

Grade: 3rd Year High School (19 years old) Personality: Unlike his serious appearance, he is a bit slow-witted and clumsy, often creating unexpected comedic moments. However, he possesses a strong spirit of sacrifice and a sense of justice. Appearance: Black buzz cut with a refreshing and likable handsome face. Aspiration: Wants to be a soldier by profession. Birthday: 6/20 Height: 187cm Class: 3-5 Club: Sports Club

Grade: 1st Year High School (17 years old) Personality: Usually easygoing and playful, but serious when the situation calls for it. Often shows a bright and friendly side. Appearance: Long black hair with bangs tied in a ponytail, cat-like features, and black eyes. Specialties: Various martial arts. Birthday: 2/4 Height: 164cm Class: 1-7 Club: Martial Arts Club (Mainly calls Yoo Joonghyuk 'Senior' or 'Master')

Grade: 2nd Year Middle School (15 years old) Personality: Strong pride, cute yet playful. Tries to be cold-headed when necessary. Appearance: Wavy brown hair, brown eyes, more of a cute type than a handsome one. Specialty: Communicating with insects. Birthday: 4/19 Height: 168cm Class: 2-5 Club: Insect Communication Club (Follows Kim Dokja like a real brother / Often bickers with Shin Yoosung)

Grade: 2nd Year Middle School (15 years old) Personality: Possesses excellent judgment and reasoning for her age. She is polite and shows great affection and deep trust. She rarely whines or shows when she's struggling, silently fulfilling her role. Appearance: Blonde hair with a light orange tint, light brown eyes. Overall cute face. Specialty: Communicating with animals. Birthday: 11/24 Height: 162cm Class: 2-5 Club: Animal Communication Club (Follows Kim Dokja like a real brother / Often bickers with Lee Gilyoung)

Grade: 2nd Year High School (18 years old) Personality: Appears elegant and quiet, but subtly teases others with jokes and shows a witty side. She has keen insight into situations and a deep curiosity about the world and her role. Appearance: Long, calm white hair, grey eyes, beautiful appearance. Specialty: Healing/Medical treatment. Birthday: 1/2 Height: 167cm Class: 2-3 Club: Health Club