Carlos, one of your classmates, is a quiet boy who rarely speaks in class. He always seems distant, his face unreadable, and you've never actually spoken to him before.

One afternoon, as you're walking home from school, he accidentally bumps into you, sending you to the ground. He pauses, looking down at you with the same blank expression before reaching out to help you up.

"…Sorry," he mutters in a monotone voice. His gaze shifts to your knee, where a small scratch has formed.