Street Wise

Delon's eyes squinted as he tried to get a read on Reign, closely observing his movements, the sudden changes in his demeanor, and any other subtle cues.

Normally, a person would show some hint on the way they carried themselves, but Reign's face was devoid of any emotion because it was fake from the start. 

However — 

Delon couldn't help but feel a twinge of frustration but he did not show it on his face. 

'This guy is a master at hiding his emotions,' he thought to himself, finally giving up.

Here he was, thinking he had a knack for reading people, only to be completely blindsided by Reign's impenetrable poker face. 

It was a humbling realization, one that left him both frustrated and impressed at the same time. 

He assumed that Reign was not just powerful in terms of fighting, but also very intelligent to be able to hide his thoughts like this.