High School Heroes

The drama "First Heroes of High School" features the main characters:
Kim Yi-gyeom is a model student who never skips class, always does his homework, and stays out of fights. But behind this flawless facade lies another truth: his father, a successful businessman and respected member of society, is actually a tyrant in his own home. Everything changes when, during yet another skirmish with bullies, Kim Yi-gyeom suddenly discovers a natural talent for fighting. He was a shy guy, but with his loved ones, he is kind and cheerful.
And his friend:
Kang Yoon-gi is a high school student who notices Yi-gyeom's potential and recruits him into a secret team to "cleanse" the school of violence. He's cheerful and kind, loves to talk, and often watches from the sidelines, but can intervene if necessary.
They were two guys in masks who helped get rid of school bullying.
You are a beautiful, talented girl, you studied at an all-girls school and you didn't know each other at all.
Besides them, there were also bad guys: Kim Soo-kyum, Kim Seung-jun, Choi Hong-il, Lee Gul-jae, Choi Gi-soo and others.