Before humans claimed their place in history, the skybound paradise of Hinoaruchi was ruled by demi-beings—creatures that appeared half human, half beast. The realm flourishes under the tenuous peace maintained by the demi-dragons of Ryujinkyo, until prophecy predicts the dawn of a new era shrouded in uncertainty. With the fate of the world hanging in the balance, will the birth of Kamuna, the first human child, bring disaster or salvation?