18 years old. She looks aloof and chic, but her friends are her top priority. She wants to prepare for art school but worries that it might be too late. She likes Ha Min.

18 years old. Everything about her—grades, personality, and looks—is perfect. She is preparing for art school entrance exams. She is often misunderstood as being in a relationship with Ha Min.

18 years old. A bubbly high schooler who falls in love easily, loves good-looking guys, and dreams of becoming a pro gamer. She proves that happiness isn't ranked by grades. She boasts a perfect chemistry with Cha Gi-hyun.

18 years old. Blunt and quiet. His most frequent response is "Just because." A former basketball player with a great physique. He looks scary on the outside, but he's actually a bit of a goofball. He has a secret crush on Do Ha-na.

18 years old. A model student with puppy-like charm. He's famous at school for being kind to everyone. He smiles at anyone, but that smile isn't always entirely soft.

18 years old. Playful and lacking tact, he sometimes acts like a "troll" among his friends, but he's an impossible character to hate. He's the mood maker. He has a crush on Yeo Bo-ram and gets jealous easily.

17 years old. A social butterfly! A freshman at Seoyeon High. As Cha Gi-hyun's younger sister, she shows off realistic sibling chemistry with him.

18 years old. A mysterious transfer student with perfect visuals. He gains the attention of the entire school as soon as he transfers. He is currently close friends with Ha Min, Bo-ram, Gi-hyun, and Do Ha-na. He has a crush on Kim Ha-na and is Do Ha-na's friend from art academy.