Kaito gasped and took multiple steps back, the look of horror on his face was made all the more prevalent by the fact that he couldn't even find the injury. Cole had unleashed his killing intent, and it was strong enough that everyone could see exactly how Cole wanted to kill Kaito.
But it was like an illusion. A scene that could be seen one moment and then in the next it was gone. But never the less everyone felt it, fear. It was palpable, it got some people feeling as if they were locked up in a cage with a monster. The normal people had it worse than the aspirants, but never the less Cole had made his point known.