By Dramabeans
Lee Seong-tae
Kim Young-eun
8
Wavve
South Korea
Korean
Source: Wikipedia
Kim Seok-tae, he is a loving father and a prosperous medical equipment businessman, but he strictly discipline Ui-gyeom to become a doctor.
Ki-yeon
Kim Soo-kyum, Kim Ui-gyeom's older brother
Kim Nam-hyeop, a second-year student at Seomun High School. His father is a medical school professor.
Myung Da-bin, Kim Ui-gyeom's mother. She gradually changes to protect her son from her husband's oppressive educational methods.
Kim Ui-gyeom, a transfer student who has a natural fighting ability. When he opens his eyes to fighting and starts using violence, he subdues the school's bullies one by one. Previously, he was regarded as the most popular and kind student in the entire school.
Kang Yoon-ki, who joins Kim Ui-gyeom to form High School Heroes. He is credited with spotting Kim Ui-gyeom's innate fighting ability and guiding him into combat while concealing his intentions. He is an active member of High School Heroes because of his excellent fighting skills and ability to make snap decisions.