One popular 'lightning armor naruto fanfic' might be 'Naruto: Lightning's Edge'. In this fanfic, Naruto discovers a new power related to lightning armor which gives him enhanced speed and strength. It often features exciting battles against powerful foes.
It could also change his offensive style. Naruto might be able to channel his chakra through the armor to create more powerful rasengan variations. The black lightning could add an extra element of destruction to his attacks.
In some fanfictions, the Lightning Armor might have unique side effects. It could potentially drain a character's chakra at a rapid rate if not properly controlled. This adds an element of risk to using it in combat.
Naruto himself is often associated with it. Since he is the main character of the series, many fanfictions explore his potential with the Lightning Armor. He might learn to use it in unique ways, like combining it with his Rasengan.
One possible plot twist could be that Naruto has a really hard time controlling the Lightning Armor at first. Instead of it enhancing his speed and power, it causes him to accidentally electrocute his friends. This would create a lot of tension and drama as he has to figure out how to master it without hurting those around him.
One idea could be a fanfic where a young ninja discovers a unique way to combine lightning jutsu with other elements like water, creating a new and powerful technique. This could lead to him being sought after by different clans for his knowledge.
A good 'lightning naruto fanfic' often has unique interpretations of Naruto's powers related to lightning. For example, it might give him new jutsu that are different from the canon ones.
One idea could be Naruto discovers an ancient scroll that details the secrets of the black lightning armor and he has to train in isolation to master it. This could lead to him developing new techniques related to the armor.
His relationship with Sasuke might become more competitive. Sasuke, seeing Naruto learn such a powerful technique, would strive to become stronger too. This could lead to more intense sparring sessions between them and a bit of friendly rivalry.