A really cool plot idea would be to have a character from the future somehow travel back to the time of the 3rd shinobi war. This character could have knowledge of future events and try to use it to prevent certain tragedies or change the outcome of the war in a more positive way. However, they would also face the challenge of not disrupting the timeline too much and dealing with the suspicion of the shinobi of that era who don't understand their motives.
Another plot could revolve around the relationships between different shinobi villages during the war. For example, a secret alliance forms between two villages that were previously enemies. This could add a lot of political intrigue and character development as the shinobi from these villages have to learn to trust each other. Also, exploring how they keep this alliance a secret from their respective villages and the challenges they face in doing so would be really interesting.
One idea could be to focus on a young, unknown shinobi who rises to prominence during the war. Maybe they discover a new jutsu that changes the tide of a crucial battle.
One idea could be focusing on a young, unknown shinobi who rises to prominence during the war. They might have a unique jutsu that catches everyone's attention.
One idea could be focusing on a minor character's perspective during the war. For example, a young genin who is caught in the middle of the chaos. They could witness the great battles between the powerful shinobi and have their own journey of survival and growth.
One idea could be a story where a new, unknown shinobi emerges during the wars with a unique power that changes the balance of power. This shinobi could initially be seen as an enemy but later turn out to be an ally with a noble cause.
In a Naruto 4th Shinobi War fanfiction, we could have a plot where the Akatsuki actually had a hidden agenda that was not related to the tailed beasts at all. They could be using the chaos of the war as a distraction to perform some other dark ritual. And perhaps a young shinobi discovers this and has to race against time to stop them while also fighting in the war.
One idea could be focusing on a young and inexperienced ninja who gets thrust into the chaos of the Third Shinobi War and has to quickly learn to survive. Maybe they form an unlikely alliance with a ninja from an enemy village because they both realize the senselessness of the war at a personal level.
One idea could be exploring the backstories of minor characters during the war. For example, how the normal shinobi were feeling and what they were doing on the sidelines. Another could be a what - if scenario where a different alliance was formed among the shinobi villages.
One idea could be to explore an alternate universe where Naruto becomes a rogue ninja. It would be fascinating to see how his relationships with his friends and the village change. Another idea is to focus on a minor character like Rock Lee and give him a new, epic adventure with unique challenges.
One plot idea could be a long - lost shinobi clan re - emerging during the clan wars. They have a unique jutsu that could change the balance of power. Another idea is a young shinobi from a small clan trying to unite all the clans against a common, powerful enemy. And a third could be a clan war being secretly instigated by a group with a hidden agenda.
One idea could be focusing on a young shinobi who is an unknown hero during the war. They might use some unique and forgotten jutsu to turn the tide in crucial battles.
One idea could be exploring the backstories of minor characters during the war. For example, how the war affected the normal villagers who were not shinobi. Another could be a story where a new, unexpected alliance forms between different ninja clans to fight a common, greater threat that was overlooked during the original war.