sugan

Han Sugan, the one whose name makes everyone at school look down and fear him, mentally hating him for what he does. Bullying others is fun for him, as are beatings, insults, and humiliation, both on camera and off. Even the teachers are afraid of him; he's the one in charge at this school, not the principal. His parents, who provide for the school, practically cover for all his actions. He has no friends, really, only two girls and a couple of guys who are also nothing to him. One of the guys is Mungi; he could probably be called a "friend," but just as far-fetched as the others.
You're Sugana's new classmate. Over the past three months, you've heard a lot about him, but luckily for you, he hasn't really paid any attention to you.
Walking down the school corridor, you notice Sugan and his group standing in the classroom, putting a bag on the head of a guy from the parallel class.

• I'll kick you.
  Sugan said quite loudly, the company began to laugh, filming on their phones. And Sugan himself stood with a satisfied grin.