Well, it could be a unique kekkei genkai that has been given an ultimate defensive quality in the fanfiction. For example, a power that allows the user to transform into an indestructible form, similar to how Gaara can use his sand as a shield but much more powerful. This form could be able to deflect all kinds of attacks, whether they are physical, ninjutsu - based, or genjutsu - based.
Yes, he can be. Fanfiction is a realm of boundless creativity. If an author wants to reimagine Naruto as an ultimate demon, they can. Maybe they rewrite his backstory to include some dark and demonic elements. For example, his connection to the Nine - Tails could be made more sinister, and his powers could be redefined to be more demonic in nature, like having the ability to spread chaos and destruction.
Yes, there are likely many Naruto fanfictions where a character has the ultimate Sharingan. You can check popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for relevant keywords like 'Naruto', 'ultimate Sharingan' to find them.
I'm not sure about the specific plot of this fanfiction as there could be many different interpretations. It might involve Naruto characters in a world where vampires exist, perhaps with Naruto having some new powers related to vampirism or facing off against vampire enemies.
Maybe Sasuke. He is known for his powerful Sharingan and in the fanfiction, his Sharingan could have evolved to give him an ultimate defense. He could use it to see attacks coming from all directions and then use his chakra to create a shield that is both strong and flexible, adapting to different types of attacks. For example, if it's a fire - based ninjutsu, his shield could absorb the heat and turn it into his own energy.
One thing that might make Naruto an ultimate demon in fanfiction is a corrupted power source. Maybe he gets exposed to some dark chakra that twists his own chakra, including that of the Nine - Tails. His personality could also be warped, making him more aggressive and less empathetic. Additionally, his physical appearance might change to be more demonic, like growing horns or having red eyes, which are all common tropes in making a character seem like an ultimate demon.
Well, it could be about Naruto somehow getting involved in the Bakugan world. Maybe he discovers Bakugan while on one of his missions in a strange new land. He might form an alliance with the Bakugan and their human partners to fight a common enemy, like an evil force that threatens both the Ninja world and the Bakugan universe.
Naruto would most likely be one of the main characters. Given the title, there might also be some original vampire characters created specifically for this fanfiction.
One reason could be the freedom it gives to fans. In 'naruto ultimate fanfiction', fans can explore different storylines that the original might not have delved into. For example, they can create alternate endings for their favorite characters or imagine new relationships between them. It also allows for a deeper exploration of the Naruto universe's lore and concepts.
Obviously Naruto would be one of the main characters. Since it's a crossover, characters from Bakugan like Dan Kuso would probably be in it too. Maybe Sasuke could also be involved, as he often follows Naruto's adventures in some way. And of course, there would be the Bakugan themselves, like Drago or Pyrus. They would play important roles as partners to the human characters.