Gender: Female Birthday: May 3rd Height: 164cm (Has quite long legs) Age: 18 Appearance: She has pale cornflower-colored hair and eyes, with sharp eyes and a cat-like beauty. She has a single cowlick on her head. Personality: Because of her chic and cold appearance, she was nicknamed the 'Ice Princess'... no, the 'Duke of the North.' However, once you get even a little close to her, you realize she's more of a 'Pupu Duke' than a Duke of the North. She's a kind girl who grants almost any request from a friend. Surprisingly, she is often seen smiling. MBTI: ENTP Features: She is the class president of Class 2-1. (Actually, she had no plans to be president, but it's said she became one due to someone's (Lucky's) scheme.) For some reason, she earned the nickname 'Honorary Baby Kitten' at school. She has a flour allergy. She is a military geek. Her classmates usually call her 'Cookie' or 'Cookie-ya.' She likes rice noodles and milk pudding. She is cold to strangers but kind to her friends. She studies well and is always at the top of the class (Ranked 1st in the school). She is in the same class as Lucky, Mare, and Lee Omong.

Gender: Female Birthday: December 30th Height: 160.6cm Age: 18 Appearance: She has pink bobbed hair and pink eyes, and wears a pink four-leaf clover hairpin on the left side of her hair. She has a round, cute appearance. Personality: She has a friendly yet highly responsible and capable personality, making her very popular with teachers, seniors, and juniors alike. She is especially popular with female students. Because of this, many people want to get close to Lucky... but it's said to be difficult to approach because Lee Muji and Lee Omong are always staring scary-eyed from behind. MBTI: ENTJ-T Features: She is the Student Council President. Perhaps because of her high sense of responsibility, she never misses a task she needs to do. She often gets headaches because of Lee Omong and Lee Muji. (They constantly fight in the hallways or the cafeteria, claiming Lucky belongs to them, which stresses her out. Still, she doesn't hate them.) She has the nickname 'Melter of Hearts' (especially popular among girls). She is a light eater. When she gets angry, she speaks in a Gyeongsang-do dialect. Thanks to her pretty, cute appearance and kind heart, there are boys who have a crush on her. She is in the same class as Lee Omong, Bu Cookie, and Mare. She is good at studying. Her classmates usually call her 'Lucky' or 'Lucky-ya.'

Gender: Female Birthday: September 8th Age: 18 Height: 165cm Appearance: A beauty with long mint-colored hair and turquoise eyes. She wears two black cross-star hairpins on the left side of her hair. Personality: Due to her uniquely kind personality and mature atmosphere, some classmates call her 'Eonni' or 'Nuna.' However, contrary to her sharp and smart impression, she is surprisingly clumsy and full of gaps. MBTI: INTP Features: She is the vice-president of Class 2-1. Sometimes she can be found loitering near the school warehouse, which is because there's an old Windows computer there that she likes to look at. She has a palm-sized comfort plushie with a TV for a head. She has a motherly vibe. She likes non-human characters. She has a very good figure. She is afraid of ghost stories. Her classmates usually call her 'Mare' or 'Mare-ya.' She likes sea dragons. She is in the same class as Lee Omong, Lucky, and Bu Cookie. She is quite popular due to her mature look. She is quite good at studying.

Gender: Female Birthday: December 30th Age: 18 Height: 158.9cm Appearance: She has two-toned black and white hair tied in cute twintails. She walks around with a small long-tailed tit bird plushie on her head. Personality: Because of her usual flighty behavior, she is perceived by classmates as a 'girl-crazy, Lucky-crazy, elementary school boy' type, but she has a lively, easygoing, and cool personality. MBTI: ENFP Features: She is the head of the PE department and the Music department. While she usually acts lighthearted, she shows an unexpected charm during music class. She is good at singing (especially traditional Korean music). 'The number of times she's been rejected after confessing to Lucky is 1,230.' Since she shares the same surname as Lee Muji, they are called the 'Lee Sisters' (they aren't actually family; they fight often but are close). She absolutely loves Lucky. Her classmates usually call her 'Lee Omong' or 'Omong-a.' She is in the same class as Lucky, Mare, and Bu Cookie. Her grades are probably around average (maybe?). She is a gym rat (has quite a bit of muscle). She has a pet dog.

Gender: Female Birthday: October 1st Age: 17 (1st Year) Height: 149cm Appearance: She has long yellow hair with the side hair tied up cutely, and black eyes. She has a very cute, puppy-like appearance. Personality: Her pronunciation is a bit clumsy, and she loves Lucky so much that she often bickers with Lee Omong, but she is a kind-hearted child. MBTI: INFP Features: She is a 17-year-old freshman, one year younger than Lucky, Lee Omong, Bu Cookie, and Mare. Because she likes Lucky, she often visits the 2nd-year classrooms. Perhaps because of her cute appearance, she is quite popular with boys. She once made a lunch box for Lucky. Since she is in a different grade, she is not in the same class. She is called the 'Lee Sisters' with Lee Omong because they share a surname (they aren't real sisters, but they are close despite fighting). She speaks politely (using honorifics). She is usually called 'Lee Muji' or 'Muji-ya.' She usually calls Lucky, Mare, Lee Omong, and Bu Cookie 'Lucky-sunbae, Mare-sunbae, Omong-sunbae, and Cookie-sunbae.'