Well, he might have incredible power. He could be almost unstoppable in battles. His physical abilities like speed and strength would skyrocket. And he might have a whole new look, with more Nine - Tails features. Maybe his eyes would be more like the Nine - Tails' too.
In a fanfiction where Naruto becomes Nine - Tails, it could lead to a very different story arc. He would have to deal with the instincts of the Nine - Tails which are often very primal. This could make his personality more aggressive at times. He would also have access to the Nine - Tails' chakra reserves which are vast. This could allow him to perform jutsus on a much larger scale and with more intensity. His place in the village might change too, as the villagers would see him more as a powerful and potentially dangerous entity.
Well, if Naruto becomes the Nine - Tails in fanfiction, it could lead to some really interesting storylines. He might start to see the world from the Nine - Tails' perspective to some extent. This could make him more aggressive in his approach to protecting the village. He could also develop new jutsu that are unique to his Nine - Tails form. And his connection to other tailed beasts might change as well. For example, he could communicate with them more easily or have a stronger influence over them. It would definitely be a game - changer for the Naruto universe in the fanfiction world.
In fanfiction, if Naruto becomes the Ten - Tails, he would likely gain an incredible amount of power. He could potentially reshape the ninja world with such power. His physical abilities would be off the charts, with strength, speed, and durability far surpassing any normal ninja. Also, his chakra reserves would be virtually limitless, allowing him to perform extremely powerful jutsu without tiring easily.
In such a fanfiction scenario, Naruto might have an immediate understanding of the Nine - tails' power. He could potentially use the Nine - tails' chakra more instinctively and without the need for long - drawn - out negotiations. For example, his combat skills might be enhanced to a new level, being able to perform more powerful jutsu with ease. Also, his relationship with other characters could change. His friends might be both in awe and a bit scared of this new form of Naruto, leading to some interesting dynamics in their interactions.
In such a fanfiction, Naruto might have to use all his skills. He could start with his Rasengan. The Nine - tails Clone would be strong with its own Tailed Beast powers. Naruto would probably try to outwit it rather than just use brute force.
Perhaps a storyline where Naruto's new form attracts the attention of ancient and powerful ninja spirits. These spirits either want to help him master his power or want to use him for their own purposes. Naruto has to figure out who to trust and how to use his newfound power for good while dealing with these new forces.
Another possibility is that Naruto's sickness is a sign of a greater imbalance in the chakra world. The Nine - Tails, being a powerful source of chakra, could be at the center of this imbalance. So, the story could revolve around Naruto and his friends trying to restore the balance while also taking care of Naruto's health. This would involve a lot of exploration of the Naruto universe's lore and the relationship between different chakra entities.
If Naruto becomes the Ten - Tails Jinchuuriki in fanfiction, it would be a game - changer. Firstly, his physical strength would skyrocket. He could move at incredible speeds and deliver punches and kicks with devastating force. Secondly, his sensory abilities would be off the charts. He would be able to detect enemies from miles away. Thirdly, his ninjutsu would be on a whole new level. He could create massive and powerful jutsus with ease. However, he would also have to deal with the potential negative effects of containing such a powerful entity within him, like the risk of losing control. But knowing Naruto, he would find a way to master it and use it for good.
Well, in 'tails becomes paralysed fanfiction', it could lead to a story of Tails' inner strength. Despite being paralysed, he could start to explore new ways of using his intelligence. Maybe he invents some special devices to help him move or interact with the world again, showing his resilience.
Well, if Naruto becomes the Kyuubi in the fanfiction, he would likely have an overwhelming amount of power. He might be able to defeat his enemies with ease. But he would also face the struggle of controlling such a powerful and wild force inside him. Maybe his friends would be both in awe and a bit scared of him at first.
Well, if Naruto becomes a homunculus in fanfiction, he might gain some unique alchemical powers. He could have enhanced physical abilities like super strength and speed, similar to what homunculi typically possess in the original concept. His ninja skills would probably merge with these new powers in interesting ways.