The change in tone and seriousness could have thrown anyone for a loop. Walker and the party remained calm though. They had been in situations that had been kept more tense. The battles they had were often life and death.
What shocked Walker, was that the mana around was clearly influenced by the way that the light devouring dragon moved. It was much clearer to sense them since they radiated manas that influenced the elemental planes.
Therefore, he could imagine that when they were in the world, the same thing might happen. Some monsters and people often radiated manas. But what if they had never kept their mana in check? What if their affinities were so high that there were certain aspects that leaked out and potentially harmed others?