White Dragons are pacifists and specialize in extremely strong healing magic. The only limit of this magic is that it can’t bring back the dead. They only eat plants and never kill living things.

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.

Haku Yowane was very much tangled up in the dramatic series of events which has inspired many Vocaloid songs. She used to live in a different Cave, one where she was considered an outcast. One dragoness, however, pitied her and became her friend; a beautiful and popular dragoness who was loved by all. But childish jealousy drove the ruler of a neighbouring cave to order that dragoness' death. Haku's friend was killed in a raid, and she was left alone once again.

Until, that is, she found another young dragoness unconscious on the ground, a Dorsal Dragon whom she had not seen before. The pair became friends; but then Haku found out that the dragoness—Rin Kagamine—was the very ruler who was responsible for her previous friend's death.

Haku eventually forgave Rin for what she had done, for she realised that the young Dorsal was a lonely dragoness just as she had been. They are both now members of the Vocaloid Clan, and like many Vocaloids they sing about their troubled pasts.