Sunset Dragons are closely related to sunrise dragons. However, their behaviors differ greatly. Sunset Dragons generally live alone or in small packs. They are more active in the evening, hunting and performing all of their daily tasks as the sun sets.

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.

Jadiuka "Gemini" is indeed a unique dragon of her clan. She possesses a peculiar behavior never seen yet within her clan: she seems to have "two personalities". Each personality is activated depending on what time of day it is. If it is any time between the morning and the evening, Jadiuka is very quiet and calm, barely speaking to anyone or doing anything. Since she is a Sunset Dragon, she is also very lazy, and spends most of her time sleeping or hiding in one of the caves near the clan's territory. If it is anytime between evening and midnight, Jadiuka turns into a very vulgar and egotistical creature, and she is often seen snarling at hatchlings and random dragons that wander near her. Sometimes, she is unlucky enough to be bitten by the more violent dragons. Jadiuka is also more active and hyper in her nighttime personality. She has been nicknamed "Gemini" because of these personalities. It is believed that she received these personalities through the disorder called DID.