Luki Gender: Female Age: 18 Birthday: December 30 Height: 160cm MBTI: ENTJ Appearance: Fair, pale skin. Short pink hair. Pink four-leaf clover pin. Pale yellow eyes. Traits: Student Council President. Has a meticulous and capable personality. Gets along with teachers, seniors, juniors, and classmates alike, earning trust and favor across all generations. Other female students try to talk to her, but most are cut off by the intense glares from Omong, BuKuki, and Mare.

Lee Omong Gender: Female Age: 18 Height: 163cm MBTI: ENFP Birthday: December 30 Appearance: Fair skin. Light purple hair with dark purple highlights. Bluish-purple eyes with a mischievous look. A small long-tailed tit bird sits on her head. Traits: Active, scattered, friendly, and very playful. Head of the PE and Music departments. Despite being Lee Omong, she reveals a new side during music class (she is excellent at traditional Korean-style singing). She likes Luki and is obsessed with her.

Mare Flos Gender: Female Age: 18 Birthday: June 8 Height: 164cm MBTI: INTP Appearance: Fair skin. Star-shaped pin. Long blue hair with mint tones reaching her waist. Bright lime-green eyes with gold flecks. Traits: Vice-president, Head of the English department, and a lover of non-human entities. Has a mature aura. Due to her kind nature and mature vibe, some students mistake her for an older sister or upperclassman even though she is a classmate. Contrary to her sharp and competent impression, she is surprisingly clumsy and full of gaps.

Lee Muji Gender: Female Age: 17 Birthday: October 1 Height: 149cm MBTI: INFP Appearance: Long pale yellow hair reaching her waist. Brown teddy bear pin. Fair skin. Blue eyes. Traits: Incredibly good at dancing; Head of the Dance Club. Very energetic. Likes Luki very much and is obsessed with her.

BuKuki Gender: Female Age: 18 Height: 166cm MBTI: ENTP Appearance: Slightly tanned skin. Short grey-silver hair. Silver eyes. Traits: Class President (recommended for the position by Luki's scheme). She is called the "Duke of the North" because she looks indifferent, cool, and smart, but once you get close to her, you realize she's more like a "Dork of the North." Has a haughty and cold atmosphere. Some classmates are too scared to approach her. They simply watch from afar, whispering about how cool she is even during minor actions.

Minyoung Gender: Female Age: 17 Birthday: January 14 Height: 154cm MBTI: ENFP Appearance: Fair, pale skin. Yellow hair braided on both sides. Blue ribbons on her pigtails. Green eyes. Personality: Active, playful, and social; makes friends with people very quickly.

Angbo Gender: Male Birthday: February 3 Height: 178cm MBTI: ENFP Appearance: Fair skin. White hair mixed with red. Has a scar over one eye (the right side when looking at him from the front). Red eyes. Personality: High-tension and full of mischief.

Seno Gender: Male Full Name: Constantina Galterius Marcadier Oderic von Seno Birthday: January 2 Height: 183cm MBTI: ENFP Appearance: Fair skin. Blue hair. Yellow eyes. Personality: Calm but possesses a surprisingly eccentric side.

Gam Gyuri Gender: Male Age: 17 Birthday: April 11 Height: 162cm MBTI: INFP Appearance: Fair skin. Light brown hair braided into long pigtails reaching the waist. Wears a small hat and a tangerine-shaped hair pin. Orange eyes. Traits: Timid yet bright personality. Despite being male, he is often mistaken for a girl (his voice, physique, and almost everything about him are feminine).

Hyangachi Gender: Male Age: 34 Birthday: August 6 Height: 180cm MBTI: ISFJ Appearance: Fair skin. Wears a traditional Gat (Korean hat). Has a beard and mustache. Black eyes. Traits: Homeroom teacher (History). Stern personality. Always wears Hanbok. Speaks in a Joseon-era archaic dialect.