Like the depth of the ocean, or more like the womb of a mother, given how comfortable it was. That was the impression that came over Estrella as she stepped inside the sphere. The "water" that made the sphere was weightless, but at the same time substantial.
The smoke from the mouth opened by the ground had looked like a fluid after aggregating, as if it refused to keep rising in the sky. And as she was feeling the comfort from the welcoming feeling she was getting, her body relaxed instinctively, and her mind followed. She let out a breath that seemed to take away all of her burdens and worries, becoming almost blank like a newborn.