Harvest Dragons are a large, flightless breed most often found in heavily forested mountains. Normally shy, these omnivorous dragons keep to themselves in remote regions, but in the fall they descend from their high territory to search for food—and lots of it. During the autumn months, harvest dragons will eat whatever they can find, from large and small animals to nuts and fruit. In the winter they retreat into large caves and hibernate until spring, living off the fat they have built up.

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.

Tsuchibokori Niji, meaning "Dust Rainbow", is a dragon with a lot of flair but a very slow, almost dull attitude. He is very spacey and constantly slow with his actions, often napping for hours at a time in the sun. Tsuchibokori is a very kind dragon and is said to look a lot like Niji, a dragon who is rarely seen and said to bring good luck with his rainbows. It is supposed that Tsuchibokori is Niji as he is never around when Niji is seen, though Tsuchibokori somewhat resembles the supposed Niji.