On a broader scale, the ninja world would enter a new era. The threat that Madara posed would be eliminated, and Naruto would likely have a major role in shaping the new world order. He might focus on peace - building initiatives and forging stronger bonds between the different ninja villages.
Well, in hinata and madara fanfiction, the theme of discovery is quite common. Hinata discovers new aspects of the world or herself through her encounters with Madara. Another theme is the clash of ideals. Hinata's pacifist ideals might clash with Madara's more militant ones, and how they resolve this difference is often explored. There's also the theme of forbidden love in some cases. Given their different standings in the Naruto universe, a relationship between them can be seen as forbidden, and fanfictions often play with this idea in interesting ways.
One common theme is their friendship. Despite being on opposite sides at times, many fanfictions explore the deep - seated bond they had. Another theme is redemption. Madara, especially, is often the subject of redemption arcs in fanfiction. Also, the theme of sacrifice for the greater good is seen, as both characters in the original story were willing to make sacrifices for their respective villages.
The plot could involve Naruto studying Madara's old techniques and strategies. He might be fascinated by Madara's ability to control the Nine - Tails in the past. So, Naruto starts to dig deeper into Madara's history and teachings, trying to incorporate some of his ideas into his own ninja way while still maintaining his core values.
It could completely change Naruto's character and abilities. Madara's teachings might lead Naruto down a darker path or give him incredibly powerful skills.
Well, in such a fanfiction, it might start with Naruto being in a situation where he becomes Madara's pet. Maybe at first, Naruto is defiant but as time passes, he could start to understand Madara's motives in some strange way. Madara, on the other hand, might initially see Naruto as just a possession but gradually develop a sense of attachment. It could be a really strange and complex relationship that unfolds as the story progresses.
Madara would have to adapt to the different threats in RWBY, mainly the Grimm. In his world, he was used to fighting other shinobi and clans. The Grimm are a whole new type of enemy. However, his Sharingan would give him an advantage in detecting their movements. He might also try to find a way to use the Grimm's negative energy, similar to how he used negative emotions in his own world to fuel his power.
Well, in fanfiction, the relationship between Hinata and Madara can be developed in many ways. Some might focus on a romantic relationship, where they overcome their differences. Others could explore a more platonic mentorship - like bond. For instance, Madara teaching Hinata some advanced ninja techniques, and in the process, they develop a deep respect for each other. This variety in relationship exploration is part of what makes Hinata and Madara fanfiction so appealing.
Another interesting point in Hinata and Madara fanfiction is the potential for character growth. Hinata could grow more confident in the presence of Madara, learning from his strength. Madara, on the other hand, might learn about the value of compassion from Hinata. Their relationship could be a catalyst for both of them to become better versions of themselves within the fan - created stories.