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.
They add novelty. For example, if a new hidden skill is introduced like 'Shadow Duplication Mastery' which allows a character to create not just a few but hundreds of shadow clones without much chakra drain. This changes the dynamics of battles and makes the story more exciting. It can also create new plot twists. Say a character discovers a hidden skill that was thought to be lost and this leads to others trying to either steal it or protect it, driving the story forward.
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 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.
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.
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.
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.
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.
It allows for a lot of creativity. Writers can take the well - known Naruto world and add their own twists. They can explore different character arcs for Naruto and the others based on this hidden agenda. For example, they can show how Naruto's friends might react when they discover his true motives, which can lead to some intense and emotional scenes. Also, it can bring in new plotlines that we never expected from the original Naruto story, like secret alliances or new enemies that are related to Naruto's hidden agenda. This makes the fanfiction really exciting and different from the source material.
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.