Personally I find the information on Primeval Demons to be sort of confusing. For example, I got world 1 to pure black tendency, killed Miralda in 1-1, fought through 1-2, and then found a Primeval Demon waiting for me in 1-3. According to the wiki, black phantom Miralda only appears in pure black, while the Primeval Demon appears one level lighter than pure black. I read this to mean that the Demon ONLY appears one level lighter and not on pure black, but does it mean that the Demon appears on one level lighter than pure black as well as pure black? Or is the information wrong?
Anyone else confused? Or am I just stupid?