Well, in DxD fanfiction, the Naruto Black Lightning could be incorporated in various ways. For example, it could be a power that a character from the Naruto universe who somehow ends up in the DxD world brings with them. This power might be used to surprise the devils, angels, and fallen angels in the DxD world as it's a completely different type of energy compared to what they are used to. It could also potentially be combined with the magic or sacred gear abilities in DxD to create unique combat techniques.
It could strengthen his relationships. His friends might be in awe of his new power and support him more. For example, Sasuke could see Naruto's black lightning as a sign of his growth and respect him even more, leading to a deeper bond between them.
One potential plotline could be a character with Naruto Black Lightning being hunted down. In the DxD world, where power is highly coveted, the appearance of such a unique ability would draw the attention of many. This could lead to a series of chases and battles as the character tries to either escape or use their power to fight back. Another plotline could be about teaching the Black Lightning to other characters in the DxD world. This would create new alliances and rivalries as different factions would want to have this power for themselves.
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.
A great fanfiction idea could be that Naruto's black lightning is connected to a prophecy. The black lightning is seen as a sign of a great change in the ninja world. As Naruto tries to master this power, he also has to deal with the political and social implications. People might fear his new power, while others see him as the key to a new era. He has to balance using the power to protect his friends and the village while also not causing chaos with its sheer strength.
Sasuke could be a great wielder. His natural affinity for lightning - based jutsu and his determination would make him a formidable user of the Black Lightning Sword. He could integrate the sword's power into his existing combat style, creating new and powerful attacks.
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.
Perhaps in the fanfiction, the Black Lightning Sword was created by a long - forgotten clan. The main character, who is an outcast in his village, stumbles upon the sword. With it, he begins to train and master the black lightning powers, all while trying to prove his worth to the village that once shunned him. He could also form an unlikely alliance with a former enemy because of the sword's existence.
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.
One common theme is self - discovery. Jennifer is often portrayed as finding out more about herself, her powers, and her place in the world. For example, in many fanfictions, she might learn new ways to control her powers that she didn't know before.