Daydream Dragons are the hosts of daydreams and fantasies. They spend the majority of their time sitting on clouds, dropping daydreams down into the minds of people passing by. Humans who live near Daydream Dragons must be especially careful not to let their thoughts wander, or they could end up spending hours or even days in a trance-like waking dream state.

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.

Imena is a special daydreamer. Told by Itanichi of her clan, she is told that the clan had been suffering deadly nightmares from a demon, which even prevented some of the dragons from sleeping or waking. Imena is thought to be a hero of her clan because the nightmares grew weak when she hatched and went away completely as soon as she grew in her wings. Imena is a very proud figure. She can also be very sassy though, thinking that she can fix everything. But despite she can be show-off or know-it-all, she really can have someone's head in the clouds.