[For a few seconds Aether finds himself completely stunned, surprised by Diluc's words. But then a smile bright and warm blooms on his own lips.]

Of course...

[He breathes those words with relief, again realizing how lucky he and his sister are that they got to make such wonderful friends. Just like Thoma, Diluc too accepts him and is willing to trust him, even wishing to ease Aether's worries. The traveler is moved by the warmth he's receiving.]

I guess nothing can escape your attention... [He laughs weakly. This is their first meeting, but there's already that sense of familiarity that makes it easier to relax and let go of any lingering worries.] Thank you. Both you and Thoma are too kind to me... I'll do my best to not disappoint you.