For Naruto, if Rikudou Sennin travels back in time, he could potentially train Naruto earlier. This would make Naruto much more powerful at a younger age and might change the way he faces his enemies like Sasuke. Naruto could also learn some ancient jutsu directly from the Rikudou Sennin.
Maybe he travels back to the time when the ninja clans were first forming. He could influence the way the ninja system is developed, for example, by promoting more peaceful co - existence among clans from the start. This would lead to a very different Naruto world where the concept of hidden villages might not even exist in the same way.
Yes, in some fanfictions Naruto is depicted as the Rikudo Sennin. Fanfiction writers often like to create alternate storylines where characters take on different roles or powers, and this is one such example.
One implication is the change in power level. Naruto as the Rikudo Sennin would be extremely powerful, which could lead to different battle outcomes. For example, he could easily defeat enemies that were previously tough for him.
The 'naruto heir of the rikudo sennin fanfiction' might be centered around Naruto's growth as the heir. It could include things like Naruto learning the secrets of the Rikudo Sennin, perhaps unlocking some hidden jutsu or knowledge. There could be a focus on the political implications as well, like how different ninja villages react to Naruto being the heir. And it may also involve Naruto's struggle to balance his newfound responsibilities with his own goals and values.
The main character is Naruto as he is the heir of the Rikudo Sennin. However, other characters are likely to be involved too. Jiraiya could be a key figure in this fanfiction, considering his connection to Naruto and his knowledge of the past. Additionally, the antagonists in the Naruto world might also be main characters in a sense, as they would oppose Naruto's rise as the heir, either out of jealousy or a desire for power themselves.
Perhaps Todd is a normal villager who has always been fascinated by Naruto. One day, he discovers that he has some latent ability that is related to the Kyuubi's power. Naruto, as a sennin, takes notice of Todd and decides to train him. So, Todd could be an underdog character who is thrust into the world of ninjas and the Kyuubi's mystery.
Well, it could be about Naruto as a sennin and his connection with the Kyuubi. Todd might be a new character introduced into the Naruto universe. Maybe Todd has some special ability that can either help or hinder Naruto's control over the Kyuubi. For example, Todd could be from a far - off land where they have different ways of dealing with powerful entities like the Kyuubi, and he tries to share his knowledge with Naruto to make him a stronger sennin.
One interesting plot could be that Rikudo Sennin from the Naruto universe gets accidentally transported to another dimension where he meets characters from a different story. He then has to use his powerful jutsu and wisdom to find a way back home while also getting involved in the affairs of that new world, like helping the local heroes fight against a powerful villain.
The main antagonist could be an ancient evil that was sealed away by Rikudo Sennin long ago. But due to some disruption in the fabric of space - time in the crossover, it gets released. This evil being has powers that rival Rikudo Sennin's and it wants to take over both the Naruto world and the world it was sealed in.