One plot twist could be that the person who was thought to be teaching Naruto about the eight gates was actually a spy from an enemy village. They were trying to get Naruto to overuse the eight gates and destroy himself so that Konoha would be weakened. But Naruto figures this out just in time and uses this knowledge to turn the tables on the enemy.
Perhaps a great plot twist is that Naruto's opening of the eight gates is actually part of a grander scheme by an ancient and powerful enemy. This enemy has been manipulating events in the ninja world for centuries and Naruto's newfound power is the key to their ultimate plan. So, instead of it being a simple power - up, it's a double - edged sword that could lead to the destruction of the ninja world if not handled properly. Also, Naruto could find that opening the gates gives him the ability to communicate with long - dead ninja, who offer him cryptic advice that he has to decipher to save the day.
Well, a great plot for 'Eight Gates Naruto Fanfiction' could be about a young ninja from a small village who idolizes Rock Lee and his use of the Eight Gates. This ninja tries to learn the technique secretly but faces many difficulties. As the story progresses, Naruto discovers his efforts and decides to help him train properly. It could also explore how the Eight Gates affect a ninja's body and mind in more detail than the original show, like what happens when a ninja tries to open a gate without proper training.
Maybe a fanfiction where an older Naruto, who has mastered the eight gates, passes on his knowledge to a new generation of ninjas. The story could focus on the challenges the students face in learning such a dangerous and powerful technique, and how Naruto helps them overcome their fears and limitations.
In fanfiction, if Naruto became the master of the eight gates, he would be extremely powerful. His already formidable combat skills combined with the power of the eight gates could make him nearly unbeatable. He could use this new ability to protect Konoha in ways he couldn't before. For example, in battles against powerful foes like Madara or Kaguya, he could open the gates one by one to gain more power and surprise his enemies.
One possible plot development is that Naruto's use of the eight gates causes him to have internal struggles. He might have to deal with the physical and mental toll it takes on him. For instance, he could struggle with controlling the power and not going overboard during battles.
Well, the main drawback is the damage to his body. The Eight Gates technique is very taxing on the body. Naruto could end up with permanent damage if he uses it too often. Also, it might change his personality. The intense power of the Eight Gates might make him more aggressive, which could be a problem when dealing with his friends and allies. And from a strategic point of view, if he uses it too early in a fight, he could exhaust himself and be vulnerable to counter - attacks.
Another concept could be a story set in an alternate universe where the Eight Celestial Gates are not just physical techniques, but also have a spiritual connection. Naruto, in this universe, has to go on a spiritual journey to fully master the gates and in the process, he learns more about the history and secrets of his ninja world.
Well, it could make Naruto extremely powerful right from the start. He might be able to take on stronger foes earlier in the story. For example, in battles against the Akatsuki, instead of relying on his normal jutsu and the power of the Nine - Tails, he could use the Eight Gates to gain a huge power boost and defeat them more easily. This would also change his relationships with other characters. His friends might be in less danger as he could protect them better, and his enemies would be more cautious of him.
An organization of ninjas who believe that the Eight Gates should be used to create a new world order. They view the current ninja system as weak and want to use the extreme power of the gates to enforce their will. Their leader could be a mysterious figure who has his own reasons for believing in this radical ideology. They would constantly oppose Naruto and his allies who want to protect the balance in the ninja world.
One idea could be a story where a new character discovers a hidden ninth gate within the Eight Inner Gates system. This character, inspired by Naruto's determination, attempts to master this gate while also facing off against old enemies who want to use this power for evil.