There were people who had white wings. They were living peacefully in a kingdom far from the human world. However, it began to cast a dark shadow on their peace. There appeared mutants that had black wings. They had magical powers that white wing people didn�t have, and using their power, they began to rule the kingdom. The king and the queen became victims to them, and they were assassinated. The king�s confidant sheltered the prince from the enemy, and he took the prince to human world secretly.
The king had a little brother. He fell in love with a human woman, it was a forbidden love, and he left the kingdom. The black wings aimed at him, too. The brother lost his life to save his wife and newborn twins.