ATLA: Zuko f.f Book 4

Water, Earth, Fire, Air. As the Gaang continue to save the world, they run into future problems. The Fire Nation has one Fire Lord. Azula is locked away along with once Fire Lord Ozai. Now, Lord Zuko rules the Fire Nation. But, where there was peace, there is now hatred and jealousy. What many did not know and was kept as a secret from the Fire Nation was that Fire Lord Ozai had an affair on Fire Queen Ursula with a Fire Nation peasant, creating a son and heir to the throne. His name was Raza and was about the same age as then, Prince Zuko. At around age 17, Raza had married a young woman named Shei. Raza knew that he had royal blood in him and had the birth right to rule the Fire Nation. Anger and jealousy had built within Raza, because he felt as if he was forgotten and felt invisible by his own family. He felt as if he needed to get back for what Fire Lord Ozai, his father, had made him and his mother go through. But not everyone closest to Duke Raza was on his side with his views. That's where betrayal comes in...