Shimmer-scale Dragons are a very beautiful breed with small—but highly reflective—scales that shimmer and shine as the dragon moves through water. They don’t have fins or webbed feet, but their long, eel-like bodies allow them to swim quite fast. They were once rumored to carry large pearls in their claws—causing many to seek them out in search of this fabulous treasure. In reality, the “pearl” is of greater value to the dragon, for the fabled treasure is actually an egg carried by a migrating female.

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.

Arale was born to dance. She can never stay still once she hears the very first sound of music and will dance from days to days, until she can barely move. In full moon nights, when the moonlight bleaches her whole body into a sparkling pearl, she starts to dance, slowly and gracefully. People who have chance to contemplate her flawless performance all agree that it is the most fascinating scene that they have ever seen in their life. Her fame quickly spreads throughout the kingdom and she is esteemed as "Arale, The Moonlight Dancer".