One idea could be exploring the Nidaime Hokage's relationships before he became Hokage. Maybe his friendships with other ninja that influenced his leadership style.
I'm not entirely sure if there is a specific, well - known fanfiction with Naruto as the Nidaime Hokage. However, given the vastness of the Naruto fanfiction community, it's very possible. Some fanfictions focus on rewriting history in the Naruto world, and this could be one of those concepts. You might have to dig around in various fanfiction websites to find one if it exists.
One good storyline could be Naruto time - traveling and meeting the Nidaime Hokage. He could learn some long - lost jutsu from him. Another could be a story where the Nidaime Hokage is brought back to life and he has to train Naruto to face a new, powerful enemy. Maybe a story where Naruto discovers a hidden connection between his family and the Nidaime Hokage, like they were part of a secret organization in the past.
One interesting plot idea could be Naruto discovering ancient techniques that were passed down from the Nidaime. For example, he might find a hidden scroll with a unique water - style jutsu that the Nidaime was known for. Another idea is that Naruto has to face an enemy who is also related to the Nidaime's past and in order to defeat them, he has to understand his own heritage better. He could also go on a journey to the Nidaime's birthplace to learn more about his ancestor and the secrets that lie there.
One plot idea could be exploring the Nidaime Rikudo Sennin's early days. Maybe he discovers a new power that is different from what Naruto has. For example, a power related to nature spirits.
One idea could be Naruto facing a new and powerful enemy that challenges the very foundation of the Hidden Leaf while he's Hokage. He has to use his unique leadership style and ninja skills to protect the village. Another could be Naruto implementing new training programs for the younger ninjas, based on his own experiences growing up.
One idea could be a story where Naruto has to face a new, powerful and mysterious enemy that has the ability to manipulate time. This would put his skills as a Hokage to the ultimate test.
In a fanfiction where Naruto is the Nidaime Hokage, the village would likely have a more inclusive and open - minded approach. Naruto, being who he is, would probably focus on uniting all the clans within the village. He might also use his influence to change some of the traditional and perhaps more rigid rules that were in place during the time of the original Nidaime Hokage. His jutsu knowledge and his unique way of thinking would bring about new defenses and strategies for the Hidden Leaf. Additionally, his relationships with the other Kage would be different as he would be in a position of power much earlier in the timeline, which could lead to different diplomatic outcomes between the villages.
One idea could be Naruto facing a new and mysterious threat from a hidden clan that has long been dormant. They could be trying to undermine the peace he has worked so hard to achieve as the Seventh Hokage.
One idea could be exploring the Shodai Hokage's early days as a ninja, before the founding of the village. Maybe show his training and how he developed his unique skills.
One idea could be Naruto having to deal with a new and powerful enemy while still adjusting to his role as the 5th Hokage. Maybe this enemy has a unique jutsu that can disrupt the village's chakra network. Another idea is Naruto using his new position to reform the shinobi education system in the village. He could introduce new training methods that focus on teamwork and moral values as well as combat skills.