User blog comment:Disfigure/This was only shown in the Anime about Guren Ichinose/@comment-84.73.60.64-20160131005307/@comment-33177490-20160131011502

I liked your nice analysis and interpretation of Guren and Mahiru-no-Yo.

I think another difference to also consider in fact is that Guren's demon weapon didn't get his hands piece or get the thorny vines popping out like how Mikaela and Crowley did it with their first-class vampire weapon. Both the demon and vampire weapons are shaped differently after all.

The progenitors and Mikaela would ask the blade to drink their blood, but whereas for Guren, he looks at the blade while asking it to drink the blood of other human sacrifices, demons, and the progenitor and not himself during the "Seraph of the End" experiment.