Masteria Expansions, Names and the proof for each

It doesn't necessarily have to be an artifact, per say

While they do celebrate the sun, thats because it was weakened to the point where it is slowly dieing. Every year, their sun spends less and less time in the sky when it does come around.

What caused this?
A monster I figure they call the Noille Nalle, or star of night.

Its a bit odd trying to find a different translation on what Noille and Nalle mean in English. Anyone wanna give a stab?

What are you translating from? I'm thinking the noille nalle is just the moon. They love the sun, it wouldn't be outrageous to say they detest the moon.