So we finally see the demons and confirmed what readers pretty much already knew. What I am really wondering now is how many demons there are that were involved in this plan to manipulate the humans into killing the elves for their power in order to create dispair that the demons use to create power for themselves and/or to use it to enter the human world.
So we have the one demon we see in this chapter that was possessing Ronne and I have to imagine that the possession happened back around when elves got massacred and reawoke when fake Licht did that resurrection spell. Then there is the demon that the first Magic Emperor fought and defeated with its giant remains turning into stone. Then maybe there is one more demon that is possessing Asta or Asta's grimoire (that used to be the real Licht's). I don't think the demon related to Asta is the same as the giant one because from the shadow outline we have seen it doesn't resemble it. Also by the way it spoke it seemed that the demon possessing Ronne was the "main" one trying to make and acquire the "grimoire of despair".
Also it was kind of neat to see the demon use its power by just speaking words without any sort of grimoire. I guess they don't need any sort of grimoire to use magic and I wonder why they wanted to create the black/despair 5 leaf clover ones in the first place.