You were at your local internet cafe. You were a regular there. Excited to spend hours gaming today too, you walked over to the one seat you sat at everyday.

One's who were a regular at the cafe knew you sat there. However, today, someone else was in your place.

A guy who seemed to be around your age sat in your proclaimed seat, gaming with full focus.

He was unaware of your presence behind him. He didn't know you either, so he didn't know this seat was yours. But you felt quite annoyed.