One possible plot could be that Naruto wakes up one day to find that all his adventures, his friends, and his growth as a ninja were just a dream. He might initially be in shock and disbelief. Then he could start to question his own identity and purpose, as all he has known was part of the dream. He might try to recreate the things he thought he had achieved in the dream in his real life, facing many difficulties as the real world is different from his dreamed - up ninja world.
It could be a mysterious figure that only exists within Naruto's dream world. This figure might be trying to keep Naruto trapped in the dream forever, preventing him from waking up and returning to his real life. Maybe it's a manifestation of Naruto's insecurities or fears, taking on a physical form within the dream to torment him.
Another plot could involve Anko on a mission with Naruto. They get stranded in an unknown land filled with strange creatures. They have to rely on each other's skills. Anko's experience and Naruto's determination combine to help them survive and find their way back home. Along the way, they might discover some secrets about Anko's past.
Maybe Naruto has had enough of the chaos in the ninja world. He could be tired of all the battles and political intrigue. So, he decides to find a secluded place, perhaps a small island, where he can live in peace and train by himself without any distractions.
Well, it could be about a character getting a chance to spend one special night with Naruto. Maybe it's a fellow ninja who has always admired him from afar. They could spend the night sharing stories of their adventures, training techniques, and dreams for the future of the Hidden Leaf Village.
In a 'Naruto is the Raikage' fanfic, the plot could be that Naruto is transported to an alternate universe where he is the Raikage. He has to quickly adapt to the Cloud Village's culture and politics. He might face a powerful enemy that is targeting the Cloud Village specifically. Naruto then uses his experience from Konoha and his Uzumaki heritage to find a way to defeat the enemy. Meanwhile, he tries to bridge the gap between the different clans in the Cloud Village and bring about a new era of peace and prosperity. There could be a lot of sub - plots involving his relationships with the Cloud ninja, his attempts to improve the village's infrastructure, and his struggle to maintain his own identity while taking on this new role.
One possible plot could be that Naruto somehow gets transported to a world where Deathstroke exists or vice versa. Naruto then has to adapt to Deathstroke's way of fighting and living. He might face challenges where he has to use his new - found Deathstroke - like skills to survive against enemies he's not used to.
One possible plot could be Naruto using his scientific knowledge to improve the ninja world. For example, he might develop new jutsu that are based on scientific principles rather than just chakra manipulation. He could study the properties of different elements in a scientific way and create more powerful and efficient attacks.
In a 'naruto is nero fanfic', perhaps Naruto is mistaken for a powerful being in Nero's world. Nero might initially be cautious of Naruto but then realize they share a common goal of protecting the weak. They could team up to fight against a powerful dark force that threatens both their worlds, with Naruto using his Rasengan and Nero using his Devil Bringer in combination.
Well, if there was a 'naruto is vanitus fanfic', it could be about Naruto somehow inheriting the powers or characteristics of Vanitus. Maybe Naruto has to deal with the new - found powers and how they affect his relationships in the Naruto world, like with Sasuke and Sakura.
Well, it could be about Naruto being a huge fan of Ganondorf's power and trying to incorporate some of his dark and dominating traits into his own ninja style. Maybe Naruto starts to study Ganondorf's strategies and uses them in battles against tough opponents in the ninja world.