Naruto might become more confident with the Lightning Devil Fruit power. He could start to rely less on his Nine - Tails chakra and more on his lightning abilities. This would lead to a change in how he views himself as a ninja. He may also become more isolated as he tries to master this new power, which could then lead to some internal conflict as he has to balance his old friendships and his new power - seeking journey.
If Naruto had a Lightning Devil Fruit in a fanfiction, it would completely change his combat style. He could use lightning - based attacks more freely, like emitting bolts from his body at will. His speed would increase significantly during battles, similar to how characters with lightning - based powers are often depicted as extremely fast in other anime. This would make him a more formidable opponent against foes like Sasuke, who already has strong fire - based attacks. The dynamic of their rivalry would shift as Naruto's new power would give him an edge in certain aspects.
In a fanfiction about Naruto's Lightning Release, there could be a story where a young girl discovers she has latent Lightning Release abilities. She trains hard under Kakashi to master it. Along the way, she befriends other ninjas and together they form a team. Their adventures involve using Lightning Release to solve mysteries and defeat enemies. For example, they might use Lightning Release to track down a missing-nin who has a special ability to hide from normal detection methods.
In some fanfictions, it could be an enemy-turned - ally. This character, who originally fought against Naruto, realizes his strength and potential and decides to teach him black lightning as a way to make amends or to join forces with him for a greater cause.
One implication is that his speed will increase tremendously. Lightning is known for its quickness, so Naruto would be able to move at lightning - fast speeds, making it difficult for his enemies to track or counter him. This would give him an edge in battles, especially against opponents who rely on slow - moving attacks or are not as agile.
Well, in many fanfictions, Naruto might learn black lightning through intense training. Maybe he gets some special guidance from a powerful shinobi who has mastered it, like Kakashi or some other unknown but strong character. He could also discover some ancient scrolls that contain the secrets of black lightning.
Another way could be as a result of a special encounter. Maybe he discovers a hidden scroll or a mysterious artifact that imparts the power of lightning control to him. This discovery could be accidental, like when he's exploring an ancient ruin or during a battle when he stumbles upon something unexpected.
He could develop a 'Lightning Clone Jutsu'. Instead of regular clones, these would be made of lightning. They could move at high speeds and deliver electric shocks on contact. Another jutsu could be 'Lightning Shield', where he surrounds himself with a layer of lightning for both offense and defense.
In fanfictions, Naruto might master the Lightning Blade through intense training. He could start with basic chakra control exercises, focusing on the element of lightning. Maybe he has a special mentor in the fanfic who guides him in molding his chakra in the precise way required for the Lightning Blade.
If Naruto ate a Paramecia Devil Fruit, his physical abilities might change drastically. For example, if it was a rubber - like Paramecia fruit, his already acrobatic fighting style could become even more so. He could stretch his limbs to attack from unexpected angles, much like Luffy in One Piece. This would give him an edge in close - combat situations, and his opponents would have a hard time predicting his moves.