Obviously, Sasuke and Sakura are likely to be the main characters, given the name 'sasuaaku'. They are two very important characters in the Naruto universe, and a post - war story about them would be quite interesting.
Most probably Sasuke and Sakura. In the Naruto series, their relationship has been a significant aspect. After the war, there could be a lot to explore about their individual growth and how they interact with each other. However, there might also be appearances from other characters like Naruto who could play a supporting role in their story.
One possible plotline could be Sasuke and Sakura exploring their relationship in the post - war world. They might face challenges like rebuilding the village together and dealing with the traumas of war. Another could be Sasuke's journey to fully redeem himself in the eyes of the villagers and Sakura being his support throughout this process.
The main characters are likely to include Aang, who will be at the center of any attempts to keep the peace. Zuko, who has the huge task of reforming the Fire Nation. Katara, who could use her waterbending and her wisdom to heal the wounds of the war, both physically and emotionally. Then there's Sokka, whose intelligence and creativity will be needed to solve the various problems that arise in the post - war world. Also, Appa and Momo will probably be around, adding a bit of their own charm to the story as Aang's loyal companions in this new phase of their lives.
Tris and Four would likely still be main characters. Their relationship has been a central part of the Divergent series, and in a post - war scenario, they would be key in leading the rebuilding efforts or in bringing about change.
Definitely Harry Potter himself. He was the hero of the war, so his post - war life would be of great interest. Also, his friends like Ron and Hermione. They were always by his side during the war, and they would likely continue to be important in his post - war life.
Definitely Captain America. He's always been a leader and in the aftermath of Infinity War, his leadership would be crucial in keeping the remaining heroes together. Also, Thor, who has lost so much, would be a great focus. His journey of dealing with his losses and finding a new purpose could be really interesting.
Luna Lovegood could be a great supporting character. Her unique perspective on magic and life would add an interesting flavor. Hagrid, of course, would be there, still taking care of the magical creatures at Hogwarts. He could provide a place for Ron and Hermione to relax and get away from the pressures of their new post - war lives. And then there are the younger students at Hogwarts who look up to them. They could be a source of inspiration for Ron and Hermione to make the wizarding world better.
The golden trio, no doubt. Harry, who has to find his place in a world that has changed so much after the war. Ron, who might be exploring new career opportunities in the wizarding world. Hermione, who could be using her knowledge to bring about positive changes. And don't forget their families. The Weasleys, especially, would be an important part of their post - war lives as they are like a second family to Harry.
Percy Jackson himself is almost certain to be a main character. After all, the fanfiction is centered around him after the war. Annabeth Chase would also likely be a main character, as she is Percy's love interest and a powerful demigod in her own right. Grover, Percy's best friend, would probably be there too, still looking out for nature and helping Percy in his new adventures.
Definitely Harry, Ron, and Hermione. They were the central characters during the war and would likely continue to be important in the post - war stories. They would be using their skills and experiences to shape the new wizarding world.
The main characters could be former aristocrats. They are likely to be the central focus as they deal with their newfound lack of privilege. For example, a duke who now has to work for a living like everyone else.