Yes. My eyes are currently located on the front of my head, and I require a pair with which to see behind me. (it is not phrased this way to be clever or funny. what is new is also dangerous; voryn can admit that he is afraid, but never openly. instead, he will ask asriel to share his skills.) I will return this favour to you.

My ears are another matter.

(fittingly, a faint sound beside them is picked up by elven ears. defensiveness is pointless when the source is another hand reaching for air, but asriel's talk of strategy is seeming more pressing now.)

My hearing is keen, but I am very focused and may become distracted. We must both listen well to our surroundings. Can you do this thing for me?