"What's going on?" he thought, sensing that something was amiss.
Curious, he spread his dark aura, extending it to a hundred-meter radius. Yet, he did not detect any life forms. "Mors, what's going on with this forest?" he inquired, his guard up.
[It's not the whole forest, only these parts. There seems to be an anti-beast barrier created around here,]
The system explained.
Despite hearing this, he did not let his guard down, keeping his aura spread to its fullest extent.
This level of vigilance even caused his dark translucent armor to dissipate as he used all the dark aura he could manifest to survey his vicinity for any life forms. After half an hour of constantly using his aura sense, he found nothing.
"Maybe I am being paranoid," he concluded, retracting his aura. The dark translucent armor reformed around his body as he continued his cautious exploration.