Nebula Dragons are nocturnal creatures. With the best eyesight to be found, they are often seen staring into space. Each dragon tends to observe a particular nebula and will eventually change their colors and patterns to match it. As the nebula changes over time, the dragon changes with it. The more intricate the design of the nebula, the better chance an individual has of attracting a mate. It is said that the markings on no two Nebula Dragons will be exactly the same.

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.

Strai was a quiet yet observant hatchling, spending his nights alone and staring into the vast void of space, staring at a seemingly boring and simple nebula. However, when the star designs began to appear in his wings, others began to see that it what he was gazing at was more dazzling than previously thought. The simplicity seemed to suit him well, and many asked to see the design (which he'd bashfully show them).

After talking to the Magi said to keep record of all the dragon's lineages in the castle, he learned that his father was a Tinsel; a fact that, after made public, had more females pining over him than before. This only made him even more of a recluse, as he doesn't want to deal with the awkward situations conversing with them brings.