The Heir 2: The Celestials Reign

When, Fiero was 86, he found his first mate. He was the first demon lord. He had only existed in his original world. Any others, the demon lord never existed. Once he died, Fiero had to ensure that the next Demon Lord took reign of an lively world. So he took the prince of the elves, sending him to the world that he would watch over him at. He had stood gaurd over the boy his whole life, ensuring he would never be hurt. If he and the elve prince combined their magic, they would create a child. The next Demon Lord. Fiero had only got up close to the boy when his friend was chosen as the next dragon prince.