Well, I really liked the fanfiction titled 'Alliances Reimagined' in the 'Naruto 4 Great Ninja War' context. In this one, new alliances are formed that completely shift the dynamics of the war. Then there's 'The Hidden Powers'. It explores some hidden powers that characters discover during the war and how they use them to turn the tide. 'The Hope Beyond War' is also a great read. It's about the hope and rebuilding that follows the end of the 4 Great Ninja War.
The most interesting plots can vary. There are those that focus on the relationships between characters during the war. For instance, a fanfiction might explore the friendship between two characters who are on opposite sides. They have to make difficult choices between loyalty to their village and their friendship. Another plot could be about a prophecy that no one fully understands until the middle of the war. This prophecy ends up guiding the actions of some characters. Also, some fanfictions play with the idea of alternate dimensions opening during the war, bringing in new threats and allies from different realms.
In a 'Naruto 5th Great Ninja War Fanfiction', the story could start with a strange phenomenon that begins to disrupt the chakra balance in the ninja world. This is a sign of the approaching war. As the war breaks out, the younger generation of ninjas, inspired by Naruto's heroics in the previous wars, step up to fight. They face off against a coalition of rogue ninjas who are being controlled by a shadowy figure with a vendetta against the established ninja order. Along the way, there are many battles, with each side using new and creative jutsus and strategies.
It could be an original character. For instance, a ninja from a small, unknown village who has a unique power and is forced to participate in the war. They could be the underdog that everyone underestimates at first.
There's also the possibility that a civilian who has no ninja training at all becomes the unexpected hero. They might use their wits and knowledge of the land to help the ninja. For instance, they could lead a group of ninja through a secret passage to avoid an ambush, or they could come up with a strategy to cut off the enemy's supply lines using their understanding of the local economy and trade routes.
Well, one plot twist could be that a minor character turns out to be a powerful spy for the enemy. They've been hiding in plain sight all along, feeding information to the opposing side.
It could be a long - lost relative of Orochimaru. This person might have been secretly studying Orochimaru's forbidden jutsu and developed even more terrifying techniques. They could be seeking revenge on the ninja world for ostracizing Orochimaru.
Naruto is still extremely popular in these fanfictions. His never - give - up attitude and his growth as a ninja make him a central figure. People love to read about how he overcomes new challenges during the Fourth Great Ninja War.
It could be an original character. For instance, a young ninja from a small, unremarkable village who has a strong sense of justice and a hidden potential. This character could be inspired by Naruto's own journey, starting from being underestimated but growing into a powerful force during the war.