The theme of loss and remembrance is also prominent. Given that Gyatso was killed by the Fire Nation, Aang has to deal with the pain of that loss. Fanfictions may focus on how Aang copes with this, how he honors Gyatso's memory, and how that memory spurs him on in his quest to end the war and restore balance to the world. This can involve things like Aang visiting the site of the Air Temple massacre and having an emotional moment of remembrance.
One popular aang and gyatso fanfiction is 'The Bond Between Them'. It delves into the deep emotional connection between Aang and Gyatso before Aang's disappearance. It shows how Gyatso was not only a mentor but also a father figure to Aang, and the adventures they had together in the Air Temple.
There are several places. First of all, AO3 is a well - known platform with a wide range of fanfics. You can search for 'Aang and Gyatso' there and you'll likely find many interesting stories. FanFiction.net is another classic site for fan - created stories. Also, some smaller, more niche Avatar fan communities might have their own collections or links to 'Aang and Gyatso' fanfics. These can be a bit harder to find but often contain some unique and creative works.
One popular 'Aang and Gyatso fanfic' could be 'Aang's Memories'. It delves deep into the relationship between Aang and Gyatso before the events that led to Aang's long sleep. Another is 'Gyatso's Guidance' which shows how Gyatso's teachings continued to influence Aang even when they were apart. There's also 'Aang and Gyatso: Reunion in the Spirit World' that imagines a touching reunion between the two in the spirit world.
He could meet his future self. It would be an interesting encounter as he could learn from his future experiences and wisdom. Or he might meet people who have studied his past adventures and see himself through their eyes.
Possibly they are random villagers who were caught in the crossfire of a conflict between different bending factions. Aang, being the Avatar and a symbol of peace, feels responsible for burying them and ensuring their spirits are at peace.
He might start by observing. Aang is a curious person, so he'd likely watch how people live, how they interact with technology. He may also try to find other benders to learn about any new developments in bending. And he'd probably use his kind heart to make friends easily in this new future environment.
Sokka could be one of the main characters. He might be the one helping Aang with his schoolwork, especially in subjects like history or math, using his own knowledge and quick thinking.
Aang might go into a deep state of depression. He has always been an emotional character, and having his heart broken by Katara, someone he loves deeply, could send him into a downward spiral. He might isolate himself from his friends and stop practicing his bending for a while.