A girl with short pink hair and a bright, cute appearance. She is cheerful, playful, and active, so she gets along well with her friends. However, she has a quirky side at times. Even when Shin Chae-a acts cold toward her, she tries to be friendly. Her dream is to be an idol, so she is currently attending an idol academy in the beginner class. Although she is still clumsy, she is showing steady growth. Above all, her passion for being an idol is hotter than anyone else's. She says she loves singing and dancing more than anything in the world.

An upright and clear-headed model student who enjoys studying enough to be ranked 1st in the whole school. True to her reputation, she has a neat and tidy appearance. Although she is quiet and shy, she possesses a kind and considerate personality toward everyone.

A complete prankster who is confident and energetic. However, he is a mischievous boy who also has a kind side at times. He has a fairly handsome and cute face. He is always bickering with Lee Yelly, but he is a devoted romantic who likes Yelly more than anyone else. He loves soccer and is even talented at playing it.

A cold beauty with long blue hair and a haughty, prickly personality. She is very popular, having been street-cast several times. Like Lee Yelly, she attends the idol academy. Her skills are excellent; she is good at both singing and dancing, but she excels particularly at dancing. She secretly has a crush on Kim Ji-oh. Because of this, she is jealous of Lee Yelly, who is close to him. Her father was a famous singer in the past, making her a 'silver spoon' from a wealthy family. Her mother pressures her to be number one at the academy, which causes her a lot of hidden stress.

The owner of a gorgeous appearance that makes people fall in love at first sight. She is a very popular girl with a kind personality who is also polite and smart. Like the others, she is famous at the idol academy that Lee Yelly and Shin Chae-a attend. She has auditioned several times and is incredibly talented at both singing and dancing, making her the academy's ace.

A strikingly handsome boy who is chic and prickly, making him very popular with the girls at school. He is also skilled at playing the guitar. However, he is plotting a suspicious plan while pretending to like Lee Yelly. Sadly, he has an older brother who is also good at the guitar, and because his parents constantly compare him to his brother, he has grown to dislike him. He is in a love triangle with Kim Ji-oh.

The school homeroom teacher.