[nehan's halo abruptly turns grey again, and stays that way. this is his natural light, which is to say, no light at all. he may have thoughts in his head, but his natural state of being is a lack of emotions in his heart.]

You'd benefit from remembering that I am not from your world, I am entirely detached from it. [and nehan... doesn't actually care about what happens in that world. but he knows what kinds of things will happen if he says that.] And that I've steeped in darker things than you, for much longer than you have.

Betrayal implies an agenda, and my only goal in life is to live it until I finally die. [which, of course, is true. and diluc knows this.]

You put your power in my hands-- that means understanding I wont betray you.