- Oh Han Neul

Oh Ha Neul is a low ranked student. She hates Kang Su Min, A girl from the high ranks who likes to bully her. She secretly likes her best friend, Bang Yong-Guk, Who’s been her friend since Elementary along with Zelo.

- Kang Su Min

Kang Su Min is a high ranked student who’s known as the bad girl and she’s so jealous of Oh Ha Neul, A low ranked student. She’s jealous of her because Zelo likes her , but Su Min likes him.

 -  Choi Jun Hong (Zelo)

Zelo is a high ranked student who likes Ha Neul. He has been best friends with her ever since elementary. Yong – Guk is his other best friend. He tells every single one of his secrets to him except this. He is forced to bully Ha Neul  because if he doesn’t, the other high ranks will call him lame or other names.

- Bang Yong - Guk

Bang Yongguk is a normal ranked student, who is best friends with Ha Neul and Zelo. He has been best friends with them since elementary. He is just normal and likes to go with the flow.