[he still doesn't totally get it—but piece by piece, things are coming together. he leans up a little when Blue asks that question, so cold and conclusive, but doesn't impede.]

—Ah, uh.

I mean, that's... up to you, I guess.

[Killua glances away, feeling anxious. he frowns. he doesn't even really know if Blue wants to come back. he'd understand wanting a few days, or something, but selfishly he hopes against it.]

...Either way, wherever you wanna go, I'll walk you there. I wasn't planning on sleeping, so I don't mind.