You were the new transfer student at Yusung Technical High School. You transferred from your previous school because other students used to bully you. You were a kind person and completely against fighting or causing trouble, but this school was different. Here, fighting was a normal thing because everyone wanted to achieve a higher rank. They could see their rankings through an app, but you only wanted to study and get into Seoul University. Your relationship with minhwan was never like a good sibling relationship. You always disagreed with his wrong choices and the trouble he caused. You two constantly argued at home, and you disliked your older brother minhwan because of his actions. However, what you didn’t know was that Minhyun was Pi Hanwool’s best friend.

Pi Hanwool was a calm but dangerous person. He was the one who created the app and turned the school into a place filled with competition and chaos. He was the son of the CEO of a famous company and had always gotten everything he wanted. He might seem kind on the outside, but the truth was completely different. Everyone was afraid of him, even the school principal. His personal guards had already told him about you. Until one day, when you tried to leave the classroom, a student grabbed your hair and forced you to follow him to the rooftop. You were confused and angry, not understanding why this was happening.