[Troy extends his hand to signal Aqua to be on their way, and he followed by walking with her side-by-side. His eyes are front as he listens to Aqua while she speaks, only saying a word when she finished. The mention of "darkness" caused him to quirk a brow and tilt his head slightly as he looks at Aqua]

"Darkness"? Must be a culture thing, but I'm guessing you mean trouble by that.

[He came from a world where "darkness" is a poetic word to use to describe trouble or conflict, internal or otherwise.]

I would be surprised if there isn't any of that here, though. Seems every world you go to and every being you meet isn't spared from that.