'Hmm. so it's like a do-it-yourself fiend transformation.'
Eren thought to himself as he processed Roza's words. He could guess that such fiend transformation would allow its users to wield their demonic powers with greater efficiency and effectiveness than before.
The reason why the den dwellers were conducting the demonic rituals was to make themselves more attuned to their demonic nature. This way, they would be better prepared to receive the blessing they could get from the Hvergelmir Springs.
The demonic ritual Eren had thwarted by raiding the den was not an isolated incident. Such rituals were taking place all across Labh Salem as the legend about the Hvergelmir Springs grew.
These preparations were out in the open when it came to the continents governed by the demonic entities. For example, on the continent of Epas where Alephee was, the covens of witches were congregating and conducting demonic rituals en masse.
