If Naruto and the Bijuu go back in time, Naruto's relationship with Madara could be completely transformed. Instead of being enemies in the future timeline, Naruto could try to understand Madara's motives from the start and perhaps prevent him from going down the dark path. The Bijuu, on the other hand, might have a different relationship with the Uchiha clan in general. They could offer their power to the Uchiha in a more positive way, rather than being something the Uchiha might try to control in the future.
Well, when it comes to Naruto and the Bijuu going back in time, their relationships with the various ninja villages' founders would be unique. Naruto could share his experiences of a united ninja world with the founders, and the Bijuu could show their true power in a non - threatening way. This would change how the founders view the concept of power and unity. Also, Naruto could have a more personal relationship with the past Akatsuki members, trying to reform them before they turn into villains, and the Bijuu could play a role in that by showing that they don't have to be used for evil purposes.
One possible plotline could be that Naruto uses his newfound ability to go back in time to prevent some of the tragedies that occurred in the past related to the Bijuu. For example, he might try to stop the initial capture and sealing of the Bijuu into different vessels, which could change the entire history of the ninja world. Another could be that the Bijuu themselves, with Naruto's help, go back to a time when they were free and try to establish a new world order where they are not feared and hunted.
Well, their relationships might become more complex. For example, Percy and Thalia might have a different dynamic as they see each other in a new light in the past. Since they are in a different time, they may rely on each other more for survival, which could strengthen their bond. Nico, being a bit of an outsider among them, might find himself more in tune with Percy and Thalia as they face the challenges of the past together. They may also form new relationships with people from the past, which could in turn affect their relationships with each other.
In the past, their relationship could be more complex. Kakashi might be suspicious of Naruto's sudden appearance and his knowledge from the future. Naruto would have to prove himself to Kakashi. However, as they work towards a common goal, like saving Konoha from a threat in the past, they would gradually build trust. Their relationship could also change in terms of how they interact with others in the past. For example, they would need to pretend to be normal villagers or ninjas from that time, and this new situation would impact how they relate to each other.
The relationships could develop gradually. At first, Naruto might be a bit wary of the Fem Kyuubi and Fem Bijuu because they are so different from what he's used to. But as they fight together against common enemies, a sense of trust could start to form. For example, if they save each other's lives in battle, that would strengthen their bond.
The story might progress with Naruto becoming a sort of super - protector. He could use the power of all bijuu to defend the Hidden Leaf Village from any threat.
It's possible that there could be some strain on their relationships. The stress of being in a different time and the fear of changing things could cause arguments. Maybe they have different ideas about what they should do while in the past. For instance, Fred and George might want to have some fun and explore, while Harry is more focused on achieving a specific goal related to the future, which could lead to some friction between them.
If Naruto became a dragon bijuu in fanfiction, his relationship with his friends would face a big transformation. His friends would need to get used to his new appearance and powers. For instance, they might be scared at first when they see him as a dragon. But as time goes on, they would realize that Naruto is still the same person inside. However, his enemies would see him as a more dangerous target. And his relationship with the other bijuu could also change. He might be seen as an equal or even a leader among them, which would change the power dynamics in the bijuu world.
Regarding his family, Hikaru could understand their support for his Go journey better. He might go back in time and be more open with them about his passion for Go. This could lead to his family being more involved in his Go - related activities, like attending more of his tournaments and providing more emotional support. Maybe his family could also play a role in promoting Go in the community because of Hikaru's influence.
When Naruto can control the bijuu in the fanfiction, his relationships shift. His friends might be more protective of him as they know his power makes him a bigger target. The villagers who once shunned him could now either idolize him or be even more suspicious. And in the ninja world at large, other villages may try to form alliances with him more eagerly, while some might plot against him out of fear that he'll use the bijuu to dominate. Naruto's newfound control over the bijuu is like a catalyst that stirs up all kinds of reactions in his relationships.
His power becomes extremely overwhelming. With all nine bijuu, Naruto gains access to an insane amount of chakra. He can perform massive jutsu without much strain. For example, his Rasengan could potentially be magnified to a scale that could destroy large areas with ease. Also, his physical abilities like strength and speed would be enhanced to superhuman levels due to the boost from the bijuu's power.