Frilled Dragons are smaller than most other breeds, but when threatened, they stretch out their wings and frills to appear larger. They generally do not like to fight and prefer hiding to confrontation. Frilled dragons live in small groups and often band together to scare off potential threats. Males also use their frills as a way to attract mates, with those displaying the “best” frills being more likely to breed.

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.

Frilled Eiji is very curious and often goes where he is not wanted. He often tries to climb into the nests of clutching dragons to inspect the new eggs, much to their mother's disapproval. Most of them simply throw him out, but many of the more temperamental parents chase him away with flame and claw. He is forever visiting the white dragons in order to soothe and heal his scorched hide.

Eiji also travels to human villages and gets into trouble there as well. He has a habit of appearing at exactly the wrong moment, often killing the mood between courting couples.

However, a few of the more protective fathers in the village do not mind when he interrupts their daughter's liaisons, as his unexpected arrival and awkward questions prevents any relationship from going that one step further.