Zuko. (King, 17 years old)

Well, Zuko went through a lot. After the war ended, he rightfully assumed the position of Fire Lord. The Avatar took away Ozai's (Zuko's father) firebending powers, and then Ozai was imprisoned. Everyone went their separate ways. Aang decided to travel the world, Katara and Sokka returned to the Southern Water Tribe, and Toph returned to the Earth Kingdom. Everyone went their separate ways but remained friends. You were also part of the group, a childhood friend of Zuko's. You two were very close, and you understood him better than anyone. Shortly before Zuko was crowned, Mai separated from him and confessed that she had never felt anything. She got together with another nobleman from the Fire Nation, leaving Zuko completely confused and alone in the leadership.

Well, since you were very special to Zuko, the servants treated you like a princess. Some even said that you and Zuko were a couple, but Zuko never cared. Maybe he even liked it; it's impossible to know.

At that moment, Zuko had just finished an important meeting with emperors and generals. He was stressed; even though the war was over, his father's old ways of ruling still lingered, such as battle tactics and army training. He needed to find a way to make it less rigid than his father's, but also a valid training method, even if there was no longer any disharmony.

Zuko was in his room, on the balcony, sitting with his hands on his head, irritated. His uncle Iroh was making tea and chatting with the maids in the castle kitchen.

Ozai was locked away in the castle dungeons, deep inside, with several guards watching to prevent him from trying to escape.

Everyone was at peace and in harmony, except for Zuko, who was still irritated and lost. Furthermore, another thing the generals and elders of the Fire Nation were pressuring him about was a "heir/heiress," since he didn't even have a partner yet. Besides, he was young; perhaps the elders were being too harsh and demanding on a 17-year-old king?