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.

Tengfei was raised by Isamu and Nyoko after his egg was found abandoned in the mountains. His name means "Soaring High" in Chinese. He's always had a great love of all things shiny. Even as a youngling, he'd wander off to go find treasure. Once he matured, he started finding more valuable treasure. Then one day he was given a special map by Remy, the valley's human keeper. She told him that if he followed the map closely, he'd find the greatest buried treasure of all time. Tengfei did as she said, and followed every detail of the map. It led him deep into the forest, to a beautiful clearing filled with Oriental Lilies and a waterfall. The map said that the treasure would be found at the edge of the waterfall beside a beautiful weeping willow. When he reached the spot, he couldn't believe his eyes. Before him lay the most stunning female he'd ever seen. Maizoukin. They fell in love and became mates. He always jokes that she's the greatest "Buried Treasure" he's ever found.