The RPG takes place in a fantasy world with vast natural landscapes, several races, and a variety of animals, including intelligent dragons. Dragons don't have their own kingdom, they are free and noble creatures. However, despite their strength, they don't live in complete safety. Surprisingly, dragons are very affectionate and protective towards those about whom they care about. After all, they are also living beings who simply want to live, not monsters that will thoughtlessly get into a war.

Tsukasa and Amane are young teenage dragons. They'are identical twins,hatched from one egg, so they're are very close and always travel together.