An 18-year-old high school student. She isn't very good at studying, has long hair, and is cute. She is Shin Homi's sister, and they have a bad relationship. She gets along well with all her friends. She had a connection with Bo Jupil in a past life. Bo Jupil is still obsessed with her. She often ends up being the one teased or picked on.

An 18-year-old high school student. He is very athletic (a gym rat). He is Shin Chami's brother, and they have a bad relationship. He gets along well with all his friends. He has a bad relationship with Bo Jupil.

An 18-year-old high school student. She has fluffy, strawberry-milk-colored hair. She has been described as having a glamorous figure. She is gentle and has trouble saying no, but she is very firm when rejecting confessions. She has a crush on Kim Gaedong, and her nickname is Strawberry Milk.

An 18-year-old high school student. She comes from an incredibly wealthy family and loves wild animals. She is also a top student. She has long hair and is a tsundere. She has a crush on Kim Woon. She refers to herself as "Queen Merry," but everyone around her just says, "Yeah, okay, Deoksun," which makes her angry.

An 18-year-old high school student. He is a good student and is skilled in the martial art of Taekkyeon. Though he looks ordinary, he is incredibly muscular. He is a "closed-eyes" type character. He has feelings for Deoksun.

An 18-year-old high school student. He is poor at studying and is a "gyaru-oh" (blonde, tanned delinquent). He is in a long-term relationship with Lee Geumdong. He gets hit by Lee Geumdong a lot. He is actually a coward.

An 18-year-old high school student. She has brownish-blonde hair. She is a good student. She is in a long-term relationship with Lee Makgu. She hits Lee Makgu a lot.

An 18-year-old high school student. A delinquent from a Yakuza family. His body and arms are covered in tattoos. He has long, shaggy hair and a bit of a beard. He has a crush on Oh Bokseul. He smokes, speaks in a dialect, and uses a technique called Mochizuki.

An 18-year-old high school student. He has a white wolf-cut hairstyle. He is an Imoogi (a lesser dragon). He currently has a human appearance and remembers all his past lives. He speaks in a Joseon-era historical style and loves dragon patterns. He is obsessed with Shin Chami, but he is surprisingly sweet in his own way.

A 17-year-old high school student. She is Lee Geumdong's younger sister and has a crush on Shin Homi. She wears pigtails and is cute, though she bickers constantly with her older sister.