Shadow Walkers are a strange breed that possess the ability to slip between the planes of reality, becoming immaterial. This allows them to hide in the shadows, either hunting from the concealment of near invisibility or evading enemies. Though they become corporeal to mate or to eat, they spend most of the rest of their lives walking in the shadows. Shadow Walkers are wary creatures, though on dark autumn evenings when the leaves fall to swirl in the chill, rain damp air, they may be seen drifting out from the shadows.

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.

Anu Oowada really is a nice dragon, but it's hard to find anyone who knows that about her, or even knows her in general. Instead of introducing herself from the start, she prefers to just follow after someone she thinks might be interesting until she feels comfortable enough to reveal herself and say 'hello'. Sadly, she's never actually worked up the nerve to talk to anyone she follows after, except for one, a female Black Tea dragon known as Tyrian Breeze. These two eventually grew to be inseparable friends, and it seems like Oowada has become Tyrian's own personal living shadow.