Another plot could revolve around Itachi and Kisame having a philosophical debate during a long journey. Since Itachi has his own complex moral code and Kisame is more straightforward in his loyalty to the Akatsuki, they could discuss the meaning of loyalty, power, and the end goals of their organization. This could lead to a deeper understanding between them or even a rift, depending on how the story unfolds.
The fight would be intense. Itachi would start by using his Sharingan to analyze the enemy's movements and look for weaknesses. His genjutsu would be his first line of attack, trying to trap the enemy in an illusion. Kisame, on the other hand, would rush in with his Samehada, slashing at the enemy with its sharp teeth. The new enemy might counter with some powerful long - range attacks, forcing Itachi and Kisame to coordinate their defenses. Itachi could use his fire - style jutsu to create a diversion while Kisame moves in for a surprise attack from another angle.
Iruka could be an important character. He's always been like a father figure to Naruto, and now with this new revelation, he might have to help Naruto deal with it. Hinata could also be in the story, and her feelings for Naruto could be complicated by his connection to Kisame. And then there could be some original characters created just for this fanfiction, like a ninja who was a former ally of Kisame and has some information for Naruto.
There could be. Fanfiction is a vast realm where all sorts of ideas are explored. However, I'm not sure if there is a highly popular or mainstream 'naruto is kisame apprentice' fanfiction. It might be a more niche concept, but it's entirely possible that some creative writer has delved into this idea to create an interesting story about Naruto learning from Kisame, perhaps incorporating Kisame's unique fighting style and view of the ninja world into Naruto's growth.
Kisame would probably be very angry at first. Samehada is his weapon and has been with him for a long time. He might feel betrayed and try to get Samehada back by force.
In certain 'guy vs naruto fanfiction', the guy could be a magic user from a world without ninjas. His magic might work in a completely different way compared to Naruto's chakra - based powers. For example, he could use elemental magic that is not the same as Naruto's use of the five elements. Their fight would be a clash of two different power systems. Also, the guy might have a different moral code that affects how he fights Naruto. He could be more ruthless or more cautious, depending on his background, which adds another layer of complexity to the story.
At first, it would be full of suspicion. Naruto is a Konoha ninja and Kisame is from the Akatsuki. But as the teaching progresses, they might develop a mutual respect. Naruto would respect Kisame's power and knowledge, and Kisame might respect Naruto's determination.
Sure. The characters are a huge part of Naruto Shippuden fanfiction. Fanfic writers use the characters to attract readers who are fans of those characters. They might focus on a character's backstory that wasn't fully explored in the anime and expand on it. Also, the interactions between characters in the original show give fanfic writers ideas for different scenarios in their stories.
By their unique abilities. Naruto's Rasengan, Sasuke's Sharingan, these abilities can be the starting point for many fanfiction ideas. Writers can think about how these abilities could be used in different battles or situations not shown in the original.
One of the most popular is 'Naruto Shippuden: Sakura Hiden - Thoughts of Love, Riding Upon a Spring Breeze'. It's popular because it shows Sakura in a new light, with her own adventures and growth.