There could be original characters created specifically for this fanfiction. Maybe a mysterious mentor figure who helps Naruto understand and control his 'dark genius' side. This character could have their own backstory and motives that tie into the overall plot.
One interesting idea could be a unique take on Naruto's power. Maybe in this fanfiction, Naruto discovers a new form of chakra that's related to his 'dark genius' side. For example, it could be a chakra that allows him to manipulate shadows in a way no one else can.
I'm not entirely sure as I haven't read it specifically. But generally, if Naruto is described as 'godlike' in this fanfic, it might mean he has extraordinary powers far beyond the normal Naruto in the original series. And being a 'dark genius' could imply that he uses his intelligence in a rather unorthodox or morally ambiguous way.
If Naruto was a genius in fanfiction, it could completely change the dynamics of the story. His growth and battles might be much different, and his relationships with other characters could also shift.
In some fanfictions, a prodigy is an orphan with no known clan but has an innate ability to understand and copy any jutsu instantly. This character then has to hide their power at first because they are afraid of being used. As the story progresses, they learn to master their power and become a key figure in protecting the village from a new, powerful enemy.
Sasuke is often a popular character in such fanfictions. Writers like to expand on his already prodigious skills and take his character in new directions. For example, making him even more powerful in genjutsu and creating new techniques for him.
Another possibility is that it could be a reimagined version of Kakashi. He is known for his intelligence in the original series, but in this fanfiction, he could be even more of a silent genius. He might have some hidden knowledge or abilities that he keeps to himself and only reveals at crucial moments to turn the tide of battle or solve a major mystery within the Naruto world.
Yes, in many fanfictions, Naruto is often portrayed as a hidden genius. Writers like to explore the idea that he has untapped potential that goes beyond what was shown in the original series. This could include him having a deeper understanding of jutsu, strategy, or even having hidden powers.
Obviously, Harry himself is a central character. His 'dark genius' persona makes him the focus as he takes on challenges in a different way. Hermione is also often present. She might be intrigued by Harry's newfound abilities and tries to understand the magic he's using from a more academic perspective.
You could try searching on popular fanfic websites such as FanFiction.net or Archive of Our Own (AO3). They have a large collection of Naruto fanfics, and you might be able to find it there by using the exact title in the search bar.