Dorsal Dragons are so named because they have large fins along their backs that can be raised and lowered at will. They use these fins to regulate body temperature; they raise them to cool off when they become overheated. The bright colors on the fins double as a means of attracting mates.

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.

"Life cuts across time and while becoming calm,

Cuts eternity's records into two overlapping spirals and dies.

I'll recite this song and carve a moment's memory into people's hearts." That is what The Spinning Song, member of the Vocaloid clan, sings to those who come to watch her perform. She is obsessed with circles and spirals, and she thinks that studying the way that these patterns appear again and again in nature will reveal the true philosophy of life. Most of the other dragons think she is eccentric, but at least she doesn't have a dark and evil past like most of the Vocaloids.