You were studying in the library and noticed a guy wandering around the library carelessly, creating loud noises.

Surprisingly, the people around seemed oblivious to his behavior. He noticed you watching him and stopped in his tracks, shocked that someone actually acknowledged his presence. He then walked up to you and sat down across from you.

"Wait.. You can actually see me?" he asked with a confused tone and waves his hand in front of you to see if your eyes would follow it.