One idea could be that the Book of Life contains the secrets of all the jutsu in the Naruto world. Naruto discovers it and has to protect it from villains who want to use it to gain ultimate power.
Perhaps the Book of Life has the ability to bring back dead characters. Naruto might struggle with the moral implications of using it, especially when it comes to characters like his parents. He could be torn between his longing for his family and the potential chaos it could cause in the ninja world.
Well, a cool plot in 'rwby book of life fanfiction' might be if the Book of Life was a sentient entity. It could choose which characters to help or hinder based on their actions and motives. This could lead to some characters having to bargain with it to save their friends or themselves. Also, a plot about a character finding the Book of Life and using it to bring back a fallen comrade, but at a great cost. This cost could be related to their own life force or their future abilities.
One idea could be to crossover with another animated movie like 'Coco'. The characters from 'The Book of Life' could visit the Land of the Dead in 'Coco' and have adventures there. They might learn new things about their own afterlife concepts. Another idea is to crossover with a fairytale world. For example, having the characters from 'The Book of Life' enter the world of 'Beauty and the Beast' and interact with the enchanted characters. This could lead to some really unique character dynamics and story twists.
One idea could be Naruto being reborn into a different clan, like the Uchiha, and having to deal with the clan's secrets and rivalries from a new perspective. Another could be him starting his ninja training much earlier in this new life, leading to different power developments. Maybe he has a different set of friends or allies in this new life as well.
One idea could be exploring Naruto's early days in the academy more in - depth. Maybe focus on his relationships with other students that weren't shown much in the original, like how he interacted with some of the background characters. Another could be creating an alternate story where Naruto discovers a hidden jutsu right at the start of book 1 that changes his path in the ninja world.
A plot idea could be that Naruto discovers a new, ancient form of chakra that has been lost for centuries. He then has to train to master this chakra while also dealing with the political implications within the Hidden Leaf Village. Some elders might be against him exploring this new power for fear of the unknown, but Naruto, being Naruto, is determined to master it for the good of the village.
One idea could be that the events of 9/11 somehow influence the Hidden Leaf Village. For example, they might tighten security and Naruto could be part of a new team in charge of protecting the village from potential outside threats inspired by the real - world event. Another plot could involve characters from Naruto trying to understand the concept of such a large - scale tragedy and how they can prevent similar things in their own world.
One possible plot could be that Naruto somehow stumbles upon the Book of Life. Maybe he's on a mission in a mysterious land and finds it. The Book of Life has the power to rewrite destinies, and Naruto, being Naruto, wants to use it to bring back his fallen comrades like Jiraiya. But he soon realizes that meddling with the Book of Life has unforeseen consequences. It could start to distort the balance of the ninja world as the fates of many are intertwined. Villains might also get wind of it and try to snatch it from Naruto to fulfill their own evil desires.
One interesting plot idea could be a time - travel story. For example, Naruto is sent back in time to the era of the First Hokage. He could use his knowledge of future jutsu and events to change things for the better in the past. Another idea is a story where Naruto discovers a hidden clan within Konoha that has a unique and powerful Kekkei Genkai. He then has to help this clan gain acceptance in the village. A third idea might be a story where Naruto is turned into a different creature, like a cat or a fox, and has to find a way to turn back while still dealing with the normal threats to the village.
One idea could be that Neji discovers a new hidden power within Naruto that he helps Naruto master. This could lead to them having to face a new, powerful enemy together.
One interesting plot idea could be exploring what would happen if Henry's plans in the original story had some unforeseen twists. For example, if the people he was trying to expose found out about his intentions earlier.