The Underworld of the Werdlem Universe was fairly populous, and not only with Devils. It had been countless years since the Werdlem Universe unified all the realms. It happened way before any of the Rank A Universes did the same.
That said, around 25% of the population in the Underworld were actually races that benefited from the high concentration of Dark Element, but were not originally Devils, Devil Beasts, Devil Spirits, and so on. You could find similar facets in the Heavens as well.
At the center of the Underworld, you would find its Reincarnation Path, now heavily fortified, and several Celestials within various stages watching over. Inside one of the recently built buildings, Cloe polished a saber that looked pretty old. As mentioned before, she was also a Seventh Stage of Weapon Intent user, so she had no use for physical weapons anymore. Yet, it was obvious to anyone that that saber held a deeper meaning for her.
