A possible plot could be that they both discover a hidden place in the village during their childhood. In the fanfiction, as adults, they return to this place to find that it holds a key to an ancient power. However, they have to overcome their differences and work together like they did when they were kids to unlock this power. This could also be a way to heal their broken friendship.
One plot idea could be that Naruto and Sasuke have a secret code they developed as kids that no one else knows about. As they grow older and face challenges, this code becomes crucial in saving each other. For example, when Sasuke is on the verge of being taken over by the darkness completely, Naruto uses the code to reach out to the part of Sasuke that still remembers their childhood bond.
Another plot idea is that when they were children, they made a promise to protect a certain family in the village. As the story progresses, this family gets targeted by a new enemy. Naruto and Sasuke, despite their strained relationship, are forced to team up again because of their childhood promise. This would show how their childhood friendship still has an impact on their actions even after all the years of separation and conflict.
A good plot could be that they enter a local village festival as childhood friends. Naruto is excited to try all the food and play all the games, while Female Sasuke is a bit more reserved. But Naruto manages to draw her into the fun, like getting her to dance with him during a traditional dance. It could also be that they get into a bit of trouble at the festival, like accidentally breaking a stall while playing a rough game. This would test their friendship as they figure out how to make amends together.
Maybe there's a plot where they all get trapped in a genjutsu that makes them relive their worst memories, but they help each other break free. They realize just how much they mean to one another as they support and comfort each other during this difficult time. This could strengthen their bond even more and lead to new adventures with a stronger friendship at the core.
One plot idea could be that they discover a hidden magical place in their childhood and later use it to hide from the Dark forces in the wizarding world. They might have made a pact as children to protect this place.
One idea could be that they discover a hidden magical place in the grounds of Hogwarts as children. They keep it a secret from everyone else and it becomes their special retreat. They meet there to share their thoughts, Hermione's love for books and Draco's family pressures. It could also be a place where they practice magic away from the prying eyes of teachers and other students.
One plot idea could be that Naruto is summoned to a different dimension where ninjutsu doesn't exist. He has to adapt and use his raw strength and wits to survive and find a way back. Another could be that he's summoned by an ancient clan that believes he's the key to unlocking a powerful, long - lost jutsu. They force him to help them, but Naruto tries to find a peaceful solution instead of just following their orders.
One plot idea could be that Naruto is framed for stealing a powerful and ancient scroll from the village. The real culprit could be a rogue ninja who has the ability to disguise as others. Naruto then has to prove his innocence while on the run from the village's forces. Another idea is that he's framed for a crime that was actually committed by a corrupt member of the village council, who wants to get rid of Naruto because he's seen as a threat to their power.
A plot could also involve Naruto being reincarnated at a different point in the Naruto timeline. For example, if he was reincarnated during the time of the Sage of Six Paths. He could have a major impact on the early development of ninjutsu and the ninja world.
How about a story where an unknown enemy creates clones of them? Naruto, Sasuke, and Sakura have to not only fight these clones but also figure out who the enemy is and why they are being targeted. Along the way, they might discover new powers within themselves and also learn more about their relationships with each other.
One idea could be that as twins, they discover a hidden power that only they can access together. Maybe it's a special jutsu passed down in their family that requires their combined efforts. For example, they might be able to open a portal to a secret dimension filled with ancient ninja knowledge and powerful artifacts.
One idea could be that Naruto and Sasuke discover a hidden ancient jutsu that grants them immortality. They then use this newfound power to protect the ninja world from threats that are beyond normal shinobi capabilities. For example, they might face off against an otherworldly demon that is immune to normal attacks.