Originating from a single species that thrived in ancient times, Xenowyrms have become an incredibly diverse breed whose appearances vary depending on their habitats. Each Xenowyrm subspecies is heavily reliant on the power of different types of mana, making them powerful magic users. Astrapi are easily the most temperamental of all Xenowyrm subspecies. Their unpredictable behavior—coupled with their masterful control of lightning magic—has the potential for devastating results. Most of their time is spent airborne, flying through the skies or circling mountainsides for prey.

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.

20uhH is very confused about why his parents both chose to call themselves "Astrapi Xenowyrm" rather than have a normal name. He doesn't get why humans tend to fall when he drops them rather than levitating with magic like he does, either. For the latter of these consternating questions, he has attempted experiments, and for some reason that goes over his head it has given him an unfavourable reputation. Many dragons try to explain to him, and he always wonders why their explanations have to be so convoluted and why some of them get angry and start calling him "drake-brained". He insists he's not stupid, but he likes things to be straightforward like how lightning causes explosions.