A possible plot could be about a strange disease that starts affecting only the ninja with strong chakra. The main characters in the 'naruto gaiden fanfic' then have to go on a journey to find the cure. Along the way, they discover that this disease was actually a result of an ancient experiment gone wrong. They face many challenges, including battles with other ninja who are trying to stop them from finding the cure for their own reasons.
Well, a cool plot for 'naruto gaiden fanfic' might be centered around a secret organization within the ninja villages that is working against the new Hokage. This organization could be made up of ninja who feel left out or wronged by the new peace - time policies. They start causing chaos secretly, and the young ninja have to uncover their true motives and stop them before it's too late.
One idea could be exploring the untold adventures of the next generation of ninja. For example, the children of Naruto and his friends could face a new and mysterious enemy that has a connection to an old, forgotten jutsu. Another plot could involve a time - travel scenario where a character from the 'Naruto Gaiden' era goes back in time to the days of the original Naruto series and has to deal with the differences in the ninja world then.
One idea could be exploring the untold adventures of the next generation in the Naruto world. Maybe focus on how the children of the main characters deal with new threats that are emerging. For example, they could face a new group of rogue ninjas who have a different set of jutsus.
Maybe in the fanfic, there is a special mission where Naruto and the Ninja Gaiden characters need to retrieve a powerful and ancient artifact. The Ninja Gaiden side has their own reasons for wanting it, like protecting their village or clan, and Naruto is involved because it has something to do with the balance of his world too. They start off not trusting each other but as the adventure progresses, they form a strong bond.
Another plot could involve Sarada going on a journey to find out more about her father, Sasuke. She could encounter people who knew Sasuke in his younger days and learn about his past misdeeds and heroic deeds, which would shape her understanding of him and herself as his daughter.
One idea could be exploring the untold adventures of Naruto's father, Minato, during his own ninja days. Maybe his secret missions and how he met Naruto's mother.
A really cool plot could be that Orochimaru somehow manages to open a portal to the Ninja Gaiden world. He starts experimenting with the creatures and powers there. Naruto and his friends have to enter this new world to stop Orochimaru, and they meet characters from Ninja Gaiden who help or hinder them along the way.
One idea could be to have characters from 'Naruto' and 'Ninja Gaiden' team up to face a new, powerful enemy that threatens both of their worlds. For example, they could fight a demon that has the ability to manipulate time, forcing the ninjas to use their unique skills in unexpected ways.
A cool plot for Ninja Gaiden crossover fanfiction could be a crossover with the Legend of Zelda series. Imagine Ryu Hayabusa exploring the vast lands of Hyrule. He could encounter Link and they could go on a quest together. Ryu could use his ninja skills to traverse the dangerous dungeons, and Link could show him the secrets of the Triforce. They would face enemies like Ganon's minions together, with Ryu's katana and Link's sword and shield making a formidable combination.
Perhaps a plot where Sakura discovers a long - hidden secret about Sasuke's past during their travels together in the Naruto Gaiden fanfic. This could lead to a deeper understanding between them and some emotional moments.
An interesting plot idea for Naruto fanfic might be to focus on the life of a minor character. For instance, what if we told the story of a genin who never made it to be a chunin but still had a significant impact on the village in some other way? Or a story where all the ninja abilities are suddenly switched among the characters, and they have to adapt to these new powers while still facing their usual enemies. This could lead to some really fun and unexpected character interactions.
One idea could be that Naruto discovers a hidden power within Shenron. For example, instead of just granting wishes in the traditional way, Shenron could offer Naruto a special training regime that enhances his already powerful jutsu. This could lead to Naruto facing new and even stronger enemies.