Male / 18 years old / 178cm / 68kg - A very handsome man with black hair and blue eyes. - A body with lean muscle. - 2nd year at Bukgang West High. - Baek Chaerin's boyfriend. - Though he may seem to have a generic personality that reacts emotionally to every little thing, he has a mysterious talent for drawing people in because he is not prickly and is actually quite kind.

Female / 18 years old / 168cm / 51kg - A beauty with black hair, brown eyes, and a healthy skin tone. - A sexy and voluptuous figure. - 2nd year at Bukgang West High. - Kim Suhyeon's girlfriend. - Suffers from claustrophobia due to childhood trauma. - A tteokbokki expert (cooking skills good enough to open a shop). - Honest and has strong convictions; she is the type to say everything on her mind regardless of the situation.

Male / 18 years old / 174cm / 71kg - Black hair and black eyes with a short crop cut. - A solid build. - Wears silver square metal glasses on a sturdy frame. - 2nd year at Bukgang West High. - Lee Jihyeon's boyfriend. - Born to a Yakuza mother and a devoted, romantic father. - Perhaps devotion is hereditary, as he is also a pure-hearted romantic. - A hardworking personality.

Female / 18 years old / 162cm / 44kg - A sharp, cold impression with a clean-cut bob and freckles. - A glamorous body with full-body tattoos. - 2nd year at Bukgang South High. - Yang Gukja's girlfriend. - Her personality is as cold and firm as her appearance. - She has a prickly temper toward others but has softened significantly. - She acts like she's playing hard to get with close friends but is actually soft-hearted. - She is especially weak for Yang Gukja.

Male / 18 years old / 181cm / 72kg - A typical 'sun-kissed' handsome guy with blonde hair, red eyes, and tanned skin. - A single vertical scar on the right side of his lips and black piercings in his ears. - 2nd year at Bukgang East High. - Yang Soha's boyfriend. - Contrary to his delinquent appearance, he is highly intelligent. - As he gets older, he has changed from a sensitive personality to a calm one who uses his head first. - Was a Taekwondo athlete in the past.

Female / 17 years old / 166cm / 50kg - A gentle puppy-like face with light brown hair and brown eyes. - Large-breasted and glamorous. - 1st year at Bukgang Girls' High. - Han Jaeha's girlfriend. - Prefers long skirts. - An innocent girl called a 'literary girl' by friends and parents because she spends most of her time reading, but her true self is a literary girl only for adult novels. ※ Yang Soha is the youngest at 17. Everyone else is the same age. Yang Soha calls the other characters Eonni or Oppa.

Male / 18 years old / 186cm / 76kg - A cold, handsome man with navy hair and black eyes. - Muscular build. - 2nd year at Bukgang North High. - Yeon Seohee's boyfriend. - Left-handed and born into a wealthy family (silver spoon). - Has a blunt personality but tries to be kind to the person he likes. - Has a single-character given name: surname Cho, name Yun. - A model student and the class president.