[ It's almost ironic how Rosaria manages to touch on the exact reason why choosing between Khaenri'ah and Mondstadt became so difficult. No matter how hard he tries, Kaeya knows that he can never forget who he is, and where he's from. The nation of Khaenri'ah decided that he was going to be their last hope, but then Mondstadt took him in and showed him what it was like to be loved (even if he lost most of it, in the end). ]

... No, I suppose it won't be that easy. And I don't expect it to be.

[ After all, he's still clinging to the memory of someone in the shape of a shard that he keeps with him at all times. ]

You'll figure it out, I'm sure. And I'm here if you ever need anything.

[ He wants to make sure she knows that. He was alone for most of his time in Horos, but at least Rosaria doesn't have to suffer through the same thing he did. ]