Well, in certain Naruto fanfictions, there are hidden skills such as the 'Soul Link'. This allows two ninjas to share their chakra, skills, and even thoughts for a short period. It can be a powerful tool in battles where teamwork is crucial. Then there's the 'Void Step' which is like a super - advanced form of the body flicker technique. It enables the user to seemingly disappear into a void and reappear at a different location without being detected. And one more could be the 'Aura Manipulation' where a ninja can create an aura around themselves that can either boost their physical abilities or have an effect on the emotions of those around them.
One interesting hidden skill in Naruto fanfic could be the ability to manipulate time on a small scale. This would give the character an edge in battles, allowing them to dodge attacks or set up their own moves more effectively.
One interesting 'hidden Naruto fanfiction' could be about Naruto having a secret power that was never explored in the original series. For example, a power that allows him to communicate with ancient spirits of the Hidden Leaf Village. This could add a whole new layer of adventure and mystery to his character.
One interesting idea could be exploring how the story would change if a major character's gender was different. For example, if Naruto was female, her relationships with Sasuke and Sakura might have different dynamics. Maybe she'd face different challenges in the ninja world as a female, like different expectations in combat or leadership.
One interesting storyline could be a fanfiction where Naruto discovers a long - lost jutsu that was created by the first Hokage. This jutsu gives him new powers and he has to learn to control it while facing off against a new and powerful enemy.
In this fanfiction, a possible concept is the hidden god's influence on the ninja world's politics. Maybe the god has a plan to reshape the power structure among the villages. Another aspect could be the exploration of a different kind of chakra system related to the hidden god, which would change how battles are fought and strategies are made.
Perhaps it delves into Naruto's connection with the Nine - Tails in a more profound way due to his hidden potential. Maybe he can communicate with the Nine - Tails on a spiritual level and gain unique powers from it. This could change the course of battles and his relationships with other characters.
One interesting concept could be the discovery of new and unique jutsu. In fanfiction, authors often create their own special jutsu that Naruto or other characters might develop. Another concept could be exploring different relationships, like Naruto having a closer bond with a minor character. Also, some fanfictions might focus on the hidden strength being a spiritual or mental power rather than just physical.
Another aspect could be the relationships they form. A hidden genius might attract different kinds of characters. Some might be jealous of their abilities, while others would want to be their allies. This can lead to complex and engaging storylines. For instance, they could form an unlikely alliance with a character who was initially their enemy, and together they could face a greater threat in the Naruto world.
One interesting storyline could be about a new character who discovers a hidden blade technique that was lost in the Naruto world. This character then has to navigate through various challenges and rivalries while trying to master the technique.
Some fanfictions might explore Naruto's hidden insecurities. For example, he may seem confident, but deep down he could be insecure about his skills compared to others like Sasuke. His hidden artistic side could also be a concept. Maybe he has a love for painting or music that he keeps hidden because he thinks it doesn't fit with his ninja image.