[It doesn't escape his attention that Diluc relaxes as well. It's a good thing. It means they are more comfortable with each other now. Yet, Aether still has to say one thing:]

I'm not Lumine... and to both of you I'm still a stranger. I haven't done anything to earn your kindness yet. [His smile is soft.] But I'll do my best make up for it.

[It must be weird for Diluc, too, to talk to someone who knows so much about you, while you know barely anything about them. Aether thinks it's fine to take it slow.

When Paimon is mentioned, Aether reflexively looks to his side, then smiles somewhat awkwardly and nods.]

Yeah... She's not here with me. I have to admit, it feels too quiet without her chiming in every moment she has the chance.

[It feels a little lonely sometimes too.]