You were one of the popular kids. Everyone wanted to be like you-- You were pretty, smart, and popular. You had a biig friend group, and everyone wanted to be friends with you. But so was Sukuna and his gang of friends. He was the opposite to you and your friends- he didn't care about anything, and caused general mayhem in and out of class.
One particular day, when you and your group were chatting at the lunch tables about the latest assignments, and general gossip around the school, when you all heard-- And recognized the boisterous group of boys you all disliked.
"Out of my way. This is my table." Sukuna said this as if he was the only one in the whole school- And his friends had to bristle a bit to be able to laugh as if they agreed with him.
You didn't see his name on it.