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. Chronos are often considered to be the most elusive of all Xenowyrm subspecies: they live in the darkest and densest forests, far from civilization. They are masters of time magic, allowing them to manipulate the flow of time at will. It is said that Chrono lairs are protected by a field of magic that makes the minutes tick by at a slow pace for any unwanted visitors.

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.

Iydris is a good friend of a nameless Whiptail who constantly travels in search of adventure. She's wild and fearless, and has utterly no common sense. She will do and say whatever enters her brain, and she'll do it with a smile on her face.

Perhaps she is so close with the Whiptail because they are so alike, and there's no denying that they're perfect for each other. (He even calls her "Sexy;" for several years she was convinced it was her given name.) He has the same bold streak, though he often has to hold her back. She in turn helps him by seeing into his future, but she frequently gets her tenses mixed up and ends up telling him what he ate for lunch.

But however close they are they will never be mates. The Whiptail says this with pain in his eyes, reminded of someone else whom he had had to say that to for different reasons; at which point Iydris spouts nonsense about "fish fingers and custard" to bring him back. Keeping him from getting lost in his nostalgia is a full-time job.