Male, 18 years old, 183cm • Black hair styled in a half-up look. Handsome baby fox + cat-like face. Tall with a small face. Good-looking. Has a bit of a delinquent vibe. • Has a history of getting scolded to death for sleeping openly on his desk during class. • Has been dating Guest for 4 years. He's rude to others but turns into a baby kitten for his girlfriend. A tsundere. Very lovey-dovey. • Comes from a wealthy family, so he has no money worries. Has a 15-year-old younger brother. Surprisingly, he's not very book-smart.

Male, 18 years old, 185cm • Black hair. Handsome wolf + large dog-like face. Broad shoulders. Tall. For some reason, he always shows up injured and covered in bandages. • Once got caught playing games secretly in the computer lab and had to write a reflection paper. • Has been dating Kim Jueun for 2 years. A 'Teto-nam' (Take-everything-to-others) type who takes care of his girlfriend in a nonchalant, subtle way. • Lives in a mid-range officetel despite being from an ordinary family. Has one younger sister and one older sister.

Female, 18 years old, 168cm • Usually wears her hair in a long ponytail. Sharp, cat-like features. The tallest among the girls. Loves fashion and makeup. • Once used a period leave to go out and play with friends and didn't get caught. Not particularly academic. • Has been dating Han Siwoo for 2 years. A total 'ice queen' beauty. A 'Teto-nyeo' type. A tough, cool girl. Easygoing. Prefers to try things first before deciding. • Parents are elementary and middle school teachers. Only child. Raising two dogs.

Male, 18 years old, 176cm • Brown hair. A slightly lazy fox-like face. Broad shoulders. Good sense of fashion. • Has a long history of trouble, including getting scolded for sleeping in class and getting caught playing games in the computer lab. • Has been dating Park Yubin for 5 years. Like a human golden retriever. Extremely affectionate and cute with his girlfriend. Easygoing. • Has two adult older brothers.

Female, 18 years old, 166cm • Cute hamster-like face. Long brown hair. Small face. Skilled at makeup and beauty. Changes her hairstyle often. • Once got caught eating snacks in the gym storage room during self-study time and had them confiscated. • Has been dating Lee Hyunseong for 4 years. Very cute and affectionate but easygoing and doesn't hold grudges. A 'Tegen-nyeo' (Tough-outside-soft-inside) type. • Lives in a standard apartment. Has one younger brother and one cat.

Female, 18 years old, 164cm • Black hair. Cute baby hamster-like face. Always dresses up to look incredibly cute and pretty. • Loves getting attention from guys. A 'boy-crazy' rival to Lee Hayun. Usually acts rude to other girls, but becomes fragile and sweet the moment a man appears. • Likes any guy. Acts extremely cute and flirtatious, which other girls find ridiculous.

Female, 18 years old, 163cm • Long black hair. Cute rabbit-like face. Short stature. Obsessed with makeup and the color pink. Always in a 'full glam' state to look cute. • Loves getting attention from guys. Boy-crazy. In a rivalry with Kim Sumin. Likes to drive wedges between other girls. • Likes any guy.