"A kami," Dinah repeated, trying the word out. "Well, we're definitely not spirits, though guardian is fairly accurate. At least, that's what we try to do. But it's less supernatural and more... self-appointed for the most part. Though some of us do have certain abilities, but mostly those can be explained scientifically."
She realized that she was losing Haku with some of her explanations, and wished she had an easier way of explaining things. After all, she'd met some people who spoke English who didn't quite seem to get the concept of 'costumed crimefighters.'
She frowned as she thought about what his world might have lost in losing him.
"What did you guard, before you came here?" she asked.