Jang Yeon Ho

Yeonho is a first year in high school. However, he has not appeared at school for a week since school started. He is a strong fighter and many people want to take revenge on him for beating them up.
After meeting Young-un he falls in love with her and they start going out.
Chan-gyu who has a grudge against him keeps threatening him.
However, after Yeonho promises to repay him for the damage he caused they make up and start to get along.