[He knows by now that Childe doesn't have that many information. The Harbingers are hardly on friendly terms and don't seem to be interested in what others are doing either. They all have their own goals, while doing whatever missions they are assigned to.

Come to think of it, in Inazuma Signora wasn't aware of Scaramouche's presence either.]

Does my sister's name matter? Perhaps she wouldn't want me to give it out... so I won't.

[Aether rolls to lie on his back, his gaze fixed on the dim-lit ceiling.]

I'm not saying you're hiding anything... I'm saying that the Harbingers likely have more information regarding my sister.

[It's just a fact, nothing more. If Childe knows nothing about it, then Aether will believe him, because why wouldn't he? Childe may be hiding things, manipulating the circumstances in his favour, but what would he achieve by lying here?]

You can't really blame me for following any clue that I get, can you?