Aria dragons are a brightly-colored and sprightly breed, perhaps most adored for their lyric calls. Their song-like melodies fill the areas they inhabit; their coos resemble those of birds, only more elegant and refined. They have fairly strong magical capabilities, but tend to reserve these strengths for last-minute defense, choosing to live their lives in simple peace. Arias, sticking to the tropics, typically live quite far from human settlements, giving rise to the previously held belief that they had gone extinct.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Nicroa is very similar to other Pink dragons except for two things. The first difference is that thanks to the Guardian Dragon blood flowing through her veins she can be found around the ever shy Keimi most of the time, protecting her; they have a big sister-little sister relationship even though they aren't related. The second difference is the special chain that Nicroa has around her neck; the chain has inscribed pink sapphires in its open loops. The pink sapphires have characters on them that spell out 'Nicroa.'