Zachary used Divine Sense to search for someone again, but this time, his previously unfailing method yielded no results.
Unlike treasures that can hide themselves, there are only three possibilities when a person escapes detection by Divine Sense.
The first possibility, the person is not within the area covered by Divine Sense.
The second possibility, the person has been hidden by some means, which could be within a completely enclosed barrier or some special method of concealment. Such methods typically require energy, and under normal circumstances, without facing difficulties, one would not choose to utilize them.
The third and simplest possibility is that the person is dead, therefore Divine Sense naturally cannot find the target anymore.
Zyaire belonged to the frontline soldiers at the camp, so it was quite normal for him to either be out or dead.