Dragons are creatures with nearly unlimited life spans. They can survive for long periods of time, and no one has found a dragon that has died of old age. Adolescence 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. Once they hit adolescence, hatchlings change quickly, maturing to their full forms in only 2 years.

Dragons don't communicate with each other verbally, but they will growl to scare off predators and frighten prey. Young dragons will emit an extremely high-pitched squeal when they are frightened. To communicate, they use telepathy with each other and to speak to other creatures.

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.

Ichiru Kiryuu is generally very timid. She has always found herself to be the weakest of all white dragons because she often gets sick and is more easily injured than white dragons should be. She is very envious of those closest to her, including Akatsuki-sempai, for being powerful and feared, while she is looked down upon. She always waits for the day when the other dragons will turn to her for help, instead of her turning to them.