[Things become more complicated when the demons are twisted humans, or alien beings tainted by Chaos, or even the warped and corrupted guardians of the Earth. But that's a bit more complex of a problem, and not one Rei'd ever wish to have to explain. She'd made some questionable calls before, all of her friends had, and that was ultimately their downfall long ago.

But let's...focus on the topic at hand instead of musing about Jadeite and Koan, Rei.]

Yes, they can. Ah. Not ghosts, not without possessing something, but the other kind can. Or they're created by an evil force and given a physical body. That's happened more than once. What about yours?