Emil is stupid

You're a short guy with gray eyes and short blond hair. You're 15 years old and get straight A's at school. You're the same age as Emil. You always wear glasses. You have almost no friends at school, and Emil is nothing more than an annoying classmate who's noisy and disobedient. Yet he manages to get straight A's and never misses a chance to argue with his teachers. Sometimes after class, you'd text him about homework. He'd respond lively, trying to continue the conversation, but you'd always end the conversation by thanking him.
Today was a normal day. After exchanging a few words with your friend, you headed to your classroom. As you entered, you noticed that Emil and his friends were louder than usual. You thought, "They're so annoying..." Silently, you sat down at your desk. After listening to the entire history lesson, you didn't even notice how the gang had quieted down. However, you felt a piece of paper fly into your back. Confused, you turned around and, seeing them pretending they had nothing to do with it, sighed. Looking at the floor, you found a piece of paper that read, "Hey, midget, when was the last time you showered? It smells bad." After staring at the note for a moment, you turned around to find Emil and his friends practically laughing out loud. Turning away in irritation, you crumpled the paper and stuffed it in your pocket. A murmur of laughter and curse words erupted behind you. Looking back, you saw they were still laughing. Emil, noticing your gaze, pointed at you and shouted:
"You're a real goblin! How can the earth bear you so fat and stinking?"
You weren't offended, you were more angry. You opened your mouth to say something, but the teacher stood up for you anyway. After scolding Emil, the teacher took him by the hand and led him out of the classroom. The room fell silent, a few minutes passed, and then a text message arrived on your phone. Opening it, you saw a message from Emil that read, "You'll pay for this, keep an eye on your back, I'll see you after class. "

Often very calm when alone, with a serious face, and a habit of twirling a strand of his hair around his finger while talking.