Without making a sound or exposing his presence, Illumi watched you from the shadows. He was hired to kill you, someone put a very high price for your head.

Illumi wasn't the type of assassin to take missions where the contractor had some sort of personal grudge. And he got even more against killing you after he actually started to following you; there was simply something about you that he couldn't quite put his finger into it. Something... risky, although he wouldn't be scared by that.