Ultranova
Clius responds.
Clius: "You may be right, Voghus wouldnt be an issue currently, since it arent as big of a threat as the 4th sibling, but we can't exclude they could serve another purpose in the plot of her...
We only know is that she wants the second key, to free herself, and that is where her weakness comes in."
He pauses for a moment.
Clius: "She currently posseses the first key, the darker one... Somehow, after we got the first key, and trapped her, she cursed the other key, and whoever posseses it, gets slowly taken over.
So, if we remove the key from Nuro, it is highly possible that her curse doesnt affect him anymore."
Mythus jumps in.
Mythus: "Furthermore, we can simply look at Nuro's behaviour after she took complete control... What is the one thing that stands out about the area around the castle?"