That's apparently what they've got bound here. We can come back because one of the gods is in charge of their underworld, so she just brings the soul back. I dunno what's going on with our bodies, without regeneration everyone still gets hurt and people die, but our souls don't die here so we stick around.

[He thought he had a decent grasp on it, but...]

It's all fucked up. Don't think about it too long.