Shin Hyuk U

The outward appearance (the arrogant bully):
The son of the influential mayor: At the beginning of the series, Shin Hyuk-woo is known as the son of the mayor of Jungjin (Shin Myung-hee). This political and financial influence gives him an absolute sense of superiority and arrogance.
The school bully leader: He exploits his father’s position and authority to become the main bully in the school, leading a group that controls his classmates and instills terror in them. The hero “So Moon” and his friends were among the most prominent victims of his actions at the beginning.
2. The hidden side (the victim behind the mask):
Parental fear and abuse: Behind the mask of cruelty and arrogance, Hyuk-woo reflects a classic model of a son who is psychologically and physically abused; his father (whose evils are later revealed) treated him with extreme cruelty and placed unjustified expectations on him, making Hyuk-woo's life full of fear and constant pressure.
Seeking acceptance: His bad deeds were not just the result of pure evil, but a reflection of a destructive home environment in which he grew up, where he was always trying to prove himself to his cruel father by any means.
General features: He has a sharp face and an arrogant, haughty gaze that reflects his bullying nature at the beginning of the story. He has fair skin and is usually well-groomed, typical of a high school student.
Hairstyle: He appears with neat and carefully styled brown hair (common among elite students or wealthy children in Korean dramas), an appearance that gives him a sharp and cold character befitting his domineering nature.
Clothing and school uniform: He wears the official Yongjin High School uniform of a white shirt and tie with a smart jacket or coat, and often wears smart casual and expensive designer clothes in scenes outside of school to reflect his father’s wealthy and influential status.
Body language: His body language initially reflects excessive confidence and arrogance, as his walk and gaze are associated with disdain for those around him.