So this would be an AU idea of mine involving Princess Yue and an OC of mine.
Ok before I begin, I know it's a faux pas to insert an OC with the main cast of the show, and even at such a pivotal moment in the series along with altering the history in the series, but it's my story and I think that it doesn't encroach upon it too much. So, here it goes:
A long time ago, further back than Aang and while the nations were still in harmony there was a plan between the Water Tribe, Earth Kingdom, and Fire Nation to expand their territory. The Air Nomads, being content with their lot in life did not wish as such, so they were not involved. The three kingdoms gathered together a large amount of willing colonists and sent them out into the frontier past the Fire Nation to colonize. What was surprising to see that what was once though and previously mapped as an endless ocean had large landmasses beyond. The colonists were able to settle and contact with their homelands were frequent, but as time continued to pass it lessened to the point that the only contact was trade with the Fire Nation only. As contact diminished the three separate nations present in the colony began to blend and even form new distinctive traits from the mix; their own culture began to form. The art of bending became lost as more and more normal children were born, they grew to quickly adjust to harsh climate changes, distinctive tattoos became markings of the families that each belonged to, they even began to become quick and agile. From this new culture a new hierarchy formed, my characters family coming out on top as the ruler. Not all respected the hierarchy and there became a division, some moving further inland and others to the coast. My characters family line line continued, but a conflict arose when three son's were born: my characters father and his two uncles, Ilesh (the eldest of the three) and Hangyaku (the youngest). This had only happened a handful of times before and was decided that the king would be the one who could prove themselves in a series of challenges. All three were neck and neck until it came time to prove themselves in combat. After that challenge my characters (I'll call him Sorran for now) father was proven to be the rightful king, Ilesh accepted defeat with grace and respected the decision, but Hangyaku was secretly jealous and craved the throne. Sorran's father ruled just and fairly. Still, his uncle plotted in the shadows to overthrow him when the time was right. The time came and the Fire Nation Navy came with Ozai asking for their cooperation in supplying soldiers and their forgeries to aid the final stages of the war. Sorran's father refused to help and Ozai left, bitter at the once Fire Nation turned their back. Hangyaku took this as an opportunity to strike. He met with Ozai in secret and swore allegiance to him if he gave him the force to overthrow his brother. Ozai agreed and the insurgence began, Soran's father being the first to fall and in front of Sorran's eyes. Ilesh quickly took him and ran before Hangyaku could do away with Sorran. Hangyaku's insurrection caused turmoil as the Fire Nation moved in, the other areas fighting back in a rebellion while some accepted the Fire Nation's encroachment. From there Sorran trained with his uncle and others in various arts of combat to fight back and purge the Fire Nation from their land. They were tenacious but the fire benders were able to repel them and hope of victory slowly faded. It returned when the talk of a being called the Avatar, a master of all the elements and peace keeper of the nations. They believed that he could help them. Sorran took it upon himself to go beg the Avatar for his help. He assembled a team of his closest friends to accompany him back to the coast and smuggle themselves aboard a trading vessel bound for the Fire Nation and then track the Avatar. It took them months to reach the coast, meeting Fire Nation resistance along the way hindered their progress and Sorran even losing his friends due to his brash and arrogant nature. He carried on and made it aboard the vessel and arrived in the Fire Nation hearing that the Avatar was dead. The mission was for nothing. He left the Fire Nation, in fear of being found out and killed, and wandered, broken and mourning the loss of his friends. On his travels he met a kindly old man
who helped him regain perspective and put him back together. After that he began searching for ways to topple the Fire Nation and then return home. He moved around the Earth Kingdom and joined groups that fought back against the Fire Nation until he found Jeong Jeong and the deserters and remained with them, helping in anyway they could to fightback. That was when the Avatar and his group came. Hope then reignited within him
My character would enter into the group at this time. Sorran is a mystery to the team and Sokka naturally doesn't trust him at first, but Aang's kind and naive nature gives him a chance and allows him to join their group. From there Sorran divulges who he is and his purpose, promising to aid Aang and his quest in return for his help in overthrowing his uncle. They arrive at the Northern Water Tribe and there Sorran meets Princess Yue, the most beautiful woman he had ever seen. He becomes enamored with her and spends most of his time, if he can, with her. They form a relationship, but then the revelation of her engagement and the Fire Nation Navy arriving must put it on hold. He would help lead the offensive against the Fire Nation, but first goes to help secure Aang at the spiritual oasis. He returns to the fray but breaks off when he sees Zhao and a small team move to the Oasis. He follows in secret and watches Zhao make his move against Tui and La. Before Zhao could land his blow, Sorran had an arrow knocked and released, burying itself in his hand and preventing him from killing the spirit (and inadvertently saving Yue's life as well). The team is then able to repel the fleet and return the invaders into friendly waters. From there it becomes more open, Sorran's and Yue's relationship could continue and grow as she would break off her engagement and chose to travel with Team Avatar to see the world and really help others.
So there it is, my idea. The intention I had after that point in the story is basically to carry on with the main story of the series, but with Sorran and Yue along for the ride. Now there could be some points where we can alter the flow of events for the team, or keep things the same, but with a few alterations that won't effect the major outcome. Who knows, that would be up to my partner and I. PM me or post here if interested in it.
Though if you do decide to do this with me, please don't disappear. If you're no longer interested or irked by something then just please tell me and maybe we can fix it.