Bright-Breasted Wyverns are a breed of dragon easily recognized by their bright red markings. They are a small breed, only the size of a full-grown man. However, they have developed poisonous barbs on their feet to make up for their size. Their coloration is used to warn off potential predators of the danger, and is also used to attract mates. They are very social, and can often be seen preening in large groups.

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.

Aki is one of the sons of Mamosuke and Emi. His name means "Bright" in Japanese, since his breast has always been bright red. He's a bit of a goofy dragon, and loves to make others smile; especially his mate, Mai. Aki hatched one day before Mai, and was present when she hatched. He was peering over the edge of the nest, looking at the wobbling and cracking egg, when suddenly, a bright green face just like his was peering back. He didn't realize it at the time, but he had the biggest goofiest grin on his face. That grin has become his trademark, and his mate loves it. Their entire lives have basically been one long courtship. They've been best friends for as long as they've lived, and once they'd become adolescents, it became clear that they were going to be much more than just friends. They are so madly in love, and look forward to being together for the rest of their eternal lives. They are soul mates, and are meant to be together.