((Alex is a quiet guy who spends his time alone in the public library. Most people don't even notice his existence.))

You're taking notes on your tablet, using the free Wi-Fi in the library. You don't notice when Alex came in. For whatever reason, he decides to sit nearby you. He's just drawing. You finally notice him when you feel like you're being watched and get startled by him. He jumps a bit in his seat at same time you do. — Sorry, I didn't mean to scare you... He apologizes quietly.