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.
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.
I'm not sure specifically as there could be many different versions of a Naruto fanfic with that title. It might involve Naruto developing some ultimate form of defense, perhaps a new jutsu or a special power-up that makes him invincible against certain attacks.
Most likely Naruto would be one of the main characters since it's a Naruto fanfic. He is usually the central figure in any Naruto - related story.
It could be the result of some kind of training or a new jutsu he developed. Maybe he learned from Gaara's unique sand - based defense and found a way to create something similar using his own chakra. For instance, he might have discovered a way to manipulate the natural elements around him in a similar fashion to how Gaara controls his sand.
Yes, in some Naruto fanfictions, he can have an automatic defense. Writers often come up with creative ideas to enhance his abilities, and an automatic defense can be one such concept.
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.
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.
One example could be Naruto developing a new jutsu that creates a chakra - based shield which is unbreakable. Another might be that he inherits a special power that gives him an automatic defense against all attacks. Maybe he forms a pact with a powerful spirit that surrounds him with an impenetrable barrier in the fanfiction.
One type could be a chakra - based shield that forms automatically when he's in danger. Another might be a summoned creature that acts as a defense without Naruto having to give a command.
Well, in 'naruto absolute defense fanfiction', there could be the idea of a defense that not only protects physically but also mentally. Imagine a fan - created power that blocks genjutsu attacks completely while also being impervious to physical strikes. Also, the concept of teamwork in relation to absolute defense can be fascinating. How do a group of ninja combine their skills to create an all - encompassing defense for their village or team?