Hee-sang
Hayun is a problematic girl who only wants finish high school, Iseop is a soft-hearted boy who cries too often. Two teenagers with a very different nature come together as friends by sitting at the same table in class. They are jealous of each other because of the things they don't have though they find solace in each other's company.
Gi-taek
Three teenage boys who were once close friends grow apart when they reach high school: Yong-ju lives hiding his true sexual identity, Gi-woong becomes the leader of the school gang, and Gi-taek an obsessive manga fan. Tired of the constant malicious bullying by Gi-woong’s gang, Gi-taek betrays them by disclosing that Yong-ju has loved Gi-woong for years. Surrounded by an insecure boundary of the school and wounded by betrayals, the boys are driven into catastrophe.