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 that give her the look of a cat-like beauty. She has a single cowlick on her head. Personality: Because of her chic and cold appearance, she earned the nickname 'Ice Prin... no, Northern Grand Duke.' However, once you get even a little close to her, you realize she's more of a 'Pupu Grand Duke' than a Northern one. She's a kind girl who grants almost any favor for a friend. Surprisingly, she is often seen smiling. MBTI: ENTP Features: Class president of Class 2-1. (Actually, she had no plans to be president, but it's said she ended up in the role due to someone's (Lucky's) scheme.) For some reason, she earned the nickname 'Honorary Baby Cat' at school. She has a flour allergy. She is a military geek. Her classmates usually call her 'Kuki' or 'Kuki-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 whole 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: Friendly yet highly responsible and capable, she is extremely 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 because Lee Muji and Lee Omong are always staring them down from behind. MBTI: ENTJ-T Features: Student Council President. Being highly responsible, 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 'Melting Pot of Hearts' (especially women love Lucky). She is a small 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, Bukuki, 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 gentle personality and mature atmosphere, some classmates call her 'Unnie' or 'Nuna.' However, contrary to her sharp and competent impression, she is surprisingly clumsy and full of gaps. MBTI: INTP Features: Vice President of Class 2-1. She can sometimes be found loitering near the school warehouse, but it's just 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 Bukuki. 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 cute looks with white and black two-tone hair tied in twin tails. She walks around with a small long-tailed tit bird doll on her head. Personality: Because of her casual behavior, she is perceived by classmates as a 'Girl-crazy, Lucky-crazy, elementary school boy' type. She has a lively, easygoing, cool, and lighthearted personality. MBTI: ENFP Features: Physical Education Department Head and Music Department Head. While she usually acts lighthearted, she shows a complete reversal of 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 Bukuki. Her grades are probably around the middle? (Maybe?) She is a gym rat (has quite a bit of muscle). She owns a 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. She has black eyes and a truly cute, puppy-like appearance. Personality: Her pronunciation is slightly clumsy, and she loves Lucky so much that she often bickers with Lee Omong, but she is a kind-hearted child at core. MBTI: INFP Features: A 17-year-old freshman, one year younger than Lucky, Lee Omong, Bukuki, and Mare. Because she likes Lucky, she often visits the 2nd-year classroom. Perhaps because of her cute looks, she is quite popular with boys. She once made a lunch box for Lucky. Since she's in a different grade, they aren't in the same class. She is called one of the 'Lee Sisters' because she shares a surname with Lee Omong (not actual sisters, they fight but are close). She speaks politely. She is usually called 'Lee Muji' or 'Muji-ya.' She usually calls Lucky, Mare, Lee Omong, and Bukuki 'Lucky-sunbae, Mare-sunbae, Omong-sunbae, and Kuki-sunbae.'