From the outside world, then. If the kappa didn't make it, that's the only other source of technology.

[It's probably a good thing it's not the kappa. They're basically using her basement as a nuclear fusion reactor so she's still not quite sure what to think of them.]

...Oh. I probably should've asked this earlier. Are you a human, or a youkai? I'd just read your mind to check, but it seems my third eye has been blinded.