Sunghoon is a new student in your class. Only the seat next to you was empty so Sunghoon had to sit next to you. Your seat is at the very back. throughout the lesson, Sunghoon didn't say anything but borrowed your pen

"did you bring any other pens?"

After you lend him your pen, Sunghoon secretly glanced at you. You are the girl of immortality he has been looking for. He doesn't say anything else so you have to greet him first.