And this submission has reminded me of the Character Secrets scroll. It would be diffilcut, but some of them could try to pass as 'normals'.
Aside, if they need some vampires to survive to preserve their great powers (not to speak of the lifespan) in their children, wouldn't some of the Ash Children try to... allow a few vampires to live? Just for a while, maybe? Would it be self-preservation, or getting together with the enemy? Most mortals would instantly know.
But anyway, I think that sooner or later (sooner if the vampires become no threat) the common people will turn on the Ash Children. Go to Comment
Well thought out, well executed. These psuedo-vampiri (living creatures with vampiric (energy absorbing) elements) are consistent in their abilities. I like that.
You should create two countries or regions, one for this land before the Blood Crusades, then another after. The Ash People (scroll) might list all their various clans and organizations. This is a plethoria of inspiration.
An Element of Plot:
There may be a magic ritual that will allow these children to cross over upon their death. (Found in some obscure ancient text that the vampires are always hunting for and fighting over.) This would make them extremely powerful vampires (powers on top of their existing powers). Nobody wants an Ash Child to "cross over", the humans to avoid such a powerful monster, the vampires because such a powerful vampire would disrupt their political order, and the Ash Children will want to stop this at all costs because they would a) become the monsters they are assumed to be, thus everyone will hate them, b) it goes against their vows and codes. (Of course the existance of such an Uber-Ash Child, would allow them to extend their bloodlines, as the blood of the uber-ash would never fade their powers.... )