[If Aether's being silly right now, then he's in good company. The truth is simple: the effect of the chocolate has already worn off, but Diluc doesn't feel inclined to let Aether go. Seeing as the feeling is mutual, why should he?

Of the commonalities they share, it's disheartening to know that loneliness is chief among them. At the same time, there's value in having yet one more tie that binds them, something they can relate to one another with and help each other through. Hearing Aether speak of his sister, Diluc's arms wind just a little tighter around him.]

You've heard it many times, no doubt, but I'm sorry you've been separated from your sister. Being without what little family you have is painful, even if it's only distance and time that separates you.

[Diluc would know, having lost both parents.]