[There seems to be a longer story here, but Aether doesn't ask. Maybe one day he'll hear more, for now he will move on and answer Hijikata's question.]

I see... You could say I'm just a traveler who also gets requests from the Adventurer's Guild. [He grins.] I take a lot of quests, but also just try to see as much of the world as I can. There's so many fascinating places in Teyvat.

[Though, he's not doing this only because he wishes to explore the world.]