Crescent Lake was identify as the Elven Capital by the Slane Theocracy. In that regard, it is safe to assume that this lake is supposed to be under the Elf Country's rule.
The Ruler of Conspiracy Arc
- Main article: The Ruler of Conspiracy Arc
During a conference held between Cardinals, it can be noted that the Slane Theocracy had already built a forward base at Crescent Lake.
There are likely elves living at Crescent Lake as it is a territory part of the Elf Country's domain.