Bright-Breasted Wyverns are a breed of dragon easily recognized by their bright red markings. They are a small breed, only the size of a full-grown man. However, they have developed poisonous barbs on their feet to make up for their size. Their coloration is used to warn off potential predators of the danger, and is also used to attract mates. They are very social, and can often be seen preening in large groups.

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.

Fuiri Kessho, meaning "Speckled Crystal", is a very beautiful dragon who is sought out to the point that she often hides herself amongst the trees. Because of this, she doesn't talk to others very often and is very quick to move on to another location. Fuiri's friends mostly consist of human children, whom she often will allow to crawl on her and use her as a fortress when they play. She likes to fish, and recently has become good friends with Yanagi Mekura, who is blind.