After frying the electricity in the entire bar creating a blackout, Rex immediately went out of the room he's in while the Awakened's attention is focused on the blackout.
He then dashes to the right before jumping on the ventilation above him.
This was done so fast that the Awakened didn't see him hiding above them on the ventilation, he now can see the Awakened from above but the Awakened can't see Rex.
But then suddenly, a subtle wind blew the place which makes Rex frown.
'Is it a wind detection spell?', Rex thought.
Knowing that the subtle wind blowing the entire bar is a detection spell used by someone, Rex immediately takes out the astral blanket and puts it on him.
Thanks to the Astral State he's in, the wind blew through his body.
Rex then looks at the situation and finds ten Awakened are approaching the VIP rooms, he saw six of them split into two groups approaching from the right and left holding swords and sabers.