East of Frost City-State, one could see a towering, rocky island from the cliffs at the edge of their vision—it was long and bent, resembling a slender curved knife or a strangely shaped dagger, its entirety covered with jagged rocks and barren sand. Consequently, the Frostfolk directly named this island based on its shape and called it "Dagger Island."
Even in the vast Endless Sea, land was the most valuable resource, and no matter how desolate or narrow an isolated island might be, people would always find a way to make use of it. Dagger Island was no exception.