Will Ull's Children Die of "Skull Fire"?
My view is "Skull Fire" was caused by dieteray patterns i.e. cannibalism, and not a hereditary disease. No doubt Ull's children were fed human flesh by the Udam. But after being adopted into the Wenja, their dietary patterns will change accordingly. The amount of human flesh they consumed probably wouldn't be significant enough to trigger "Skull Fire" at such a young age. So no, my belief is that Ull's children won't contract "Skull Fire" because they abandoned cannibalism in time at a young age.