Successful Distraction?

Gustav knew this form could only be maintained for about a minute so he had to get into the hole as soon as possible to avoid depleting his energy completely before his task was finished.

[Silent Advancement Has Been Activated]

Gustav activated Silent Advancement while in this form and proceeded to soar into the sky.

Thhrrrrhhh~

He barely made any sound except for his take-off as he flew across the air, ascending with immense speed.

'Four thousand feet,'

'Five thousand feet,' 

'Six thousand feet,' 

'Seven thousand feet,'

Gustav counted the number of feet he had ascended as he kept flying upwards without changing trajectory.

His speed was so insane that he was crossing three thousand feet in a second.

If Silent Advancement wasn't activated, his body cutting through the sky would have been making a loud noise.

'fifteen thousand feet,'

'Sixteen thousand feet,'