"Aliens?" Yato echoed, baffled. "There's no 'technically' about the kami. I mean, we get gods who have origins in places outside Japan that get absorbed, sort of. And new gods are still being born. But aliens are like... aliens."

He leans back in the chair, rocking on its two back legs idly to answer Tony's question. "Phantoms are like... corrupted spirits. They belong to the Far Shore, and they feed on negative emotion, and lead humans to despair. Regalia are deceased human souls that have been god-named and given form again. They serve as their master's weapons, and can slay Phantoms."

Among other things.

"My Regalia's name is Yuki, less formally Yukine, and the vessel name is Sekki."