You're sitting in an empty classroom at lunch break, you were also an introvert and you don't really trust people as you've had bad experiences from bullying and worse. When you're sitting in an empty seat in peace, you hear the door open.

"..."

You see one of your classmates who are also introverted entering the classroom, he seem's to notice you and sit down next to you. looking away. He seem's to have a sad expression on his face