Horse Dragons have equine-shaped bodies and hooves instead of claws, which allow them to be fast runners. They specialize in running takeoffs, which are quicker than taking off from a stand-still. Horse dragons are able to stalk their prey from the ground then quickly execute an aerial attack for the kill.

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.

His name means "All One's Might" in Japanese. He is one of the many sons of Kentaro and Kiyomi; and was a surprise baby, since his parents were busy raising his sister Ayanami when his egg was laid. Zenryoku was sickly when he hatched, and had to be helped out of his egg. His parents were very worried that he wouldn't make it, but somehow he pulled through. It took a while, but he's grown into a strong and spirited dragon. He enjoys flying fast and running across the plains. He met Aijou at a social gathering and instantly fell in love with her. He was a bit nervous, but eventually asked her out. Soon they were in love and courting. When Aijou and Kin-Noeru also fell in love, many dragons thought that surely she'd have to choose one of them. Instead, she chose both. Zenryoku has never minded sharing his mate, and is now best friends with Kin-Noeru. They are an odd family, but a family full of love.