I think his early ghost form was the result of repeatingly falling from a high place and not eating any food, so when he fixed his broken bones and gained some muscles it gets covered up by his new flesh.
She is paranormal i think, the other low ranked human and ghost has their normal face on the doll, but kamikiri (a small god) and our mc has both of their face distorted.
Then it all turns out just to be a test gramps set up so that uruma can be ready for the world, and uruma start making out with kyou butt booty naked in a love hotel😍
I love how the girls try so hard to be intimidating, or should i say an edge Lord? But then got asked normal questions and immediately break out of character.