"It's created depending on how much fear there is of darkness. Terrorizing humans used to be the easiest way to get it, and it helped everyone else in the long run anyway," the further this explanation went on, the more awkward Emizel felt about it. "The Nightmares are the closest things to demons here, so if anything had been making it, it'd be the first place to look."

"....Although, gathering them all together was really more of Roxas' idea."