Swallowtail Dragons are graceful and quick flyers, much like their namesake bird. They are capable of precise aerial acrobatics, and can reach very high altitudes. Because of this, humans observing these dragons are often astonished at how large they are when confronted up close. A Swallowtail’s diet consists of insects and small mammals plentiful in temperate forests. These dragons are also made remarkable by their paper-thin wing membranes, which allow light to pass through, creating an astonishing effect on starry nights.

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.

Ever since he was a hatchling, Kettei considered the sky his personal playground, and went out flying each day since his wings matured. Now whenever the sky is filled with clouds, Kettei practices his high-altitude flying by maneuvering around or through cloud formations, envisioning mazes and obstacle courses. He spends clear and rainy days on a special cliff near his living area, feeling the alpine wind and waiting for the soft, fluffy clouds he likes to return.