Well, it could start with Naruto being in a tight spot, like surrounded by a bunch of powerful foes. Itachi and Kisame show up out of the blue. Itachi uses his Sharingan to confuse the enemies, while Kisame uses his brute strength. They manage to get Naruto out of there. Then, Naruto might be curious about their motives. Itachi could give some cryptic answers, and Kisame would just grunt. This encounter could lead to a series of events where Naruto, Itachi, and Kisame are involved in a bigger mystery that ties to the secrets of the ninja clans.
A fanfic plot could involve Itachi and Kisame being sent on a mission that accidentally crosses paths with Naruto's endangerment. For example, they are tracking a dangerous criminal who has also set a trap for Naruto. They save Naruto from the trap. As they do, Itachi realizes that Naruto's Nine - Tails power could be a threat or an asset depending on who gets their hands on it. So, he and Kisame decide to keep Naruto safe for a while. During this time, Naruto tries to understand Itachi's true intentions, and they end up having some intense conversations about the nature of power and loyalty in the ninja world.
In a fanfic, Itachi and Kisame could be in a situation where they need Naruto's help in the long run. So, when they see Naruto in immediate danger from a group of shadowy assassins, they step in to save him. After the rescue, they start to train Naruto in their own unique ways. Itachi might teach Naruto some mental techniques related to the Sharingan, like how to better sense danger. Kisame could show Naruto how to better control his chakra flow in water - based environments. This would create a bond between them, and they would form a sort of makeshift team to face future threats together.
Itachi might have a secret agenda that Kisame is not fully aware of. He could be using this opportunity to protect Naruto in some way while still appearing to be following the Akatsuki's orders. So, there could be a lot of internal conflict within the Akatsuki duo during this whole situation with Naruto.
In a fanfic of Kisame and Itachi taking Naruto, it might explore the relationship between the two Akatsuki members and Naruto. Itachi has his own complex reasons for his actions, and Kisame is his loyal partner. When they take Naruto, Itachi might be conflicted as he has a connection to Naruto through Sasuke. They could end up in a situation where they have to make a choice about what to do with Naruto.
In some fanfics, Itachi and Kisame might save Naruto because they realize his potential importance to the overall balance in the ninja world. Itachi, having his own hidden motives and a sense of protecting the village from afar, could see Naruto as a key figure. Kisame, following Itachi's lead, would also be involved. They might save Naruto from a group of rogue ninjas who are after Naruto's power. This would create an interesting dynamic as Naruto would be both suspicious and grateful towards them.
One popular fanfic could be 'The Encounter' where Itachi and Kisame are on a mission to find Naruto. In this fanfic, they face various challenges while tracking him down. It shows their unique abilities as they navigate through different terrains in the Naruto world. They might encounter other characters along the way who either help or hinder their search.
One possible main plot could be the adjustment period for Naruto. He's used to being alone, and suddenly having Kisame and Itachi as his adoptive fathers would be a huge change. They'd have to teach him different skills. Itachi might focus on Naruto's chakra control and strategic thinking, while Kisame could train him in more physical combat aspects. There could also be a sub - plot about how the village reacts to Naruto being adopted by two former enemies.
One possible plot could be that a powerful and mysterious ninja casts a spell on Itachi as part of a revenge plan against the Akatsuki. This results in the MPreg situation. Kisame and Itachi then have to embark on a journey to find a way to reverse the spell. Along the way, they face various challenges and also discover new things about their relationship and themselves. For example, they might find that they are more in love than they thought and that they are willing to sacrifice a great deal for each other and the unborn child.
The plot could involve Naruto getting the sword as a gift from an unexpected source. With Kisame's sword in his possession, Naruto becomes a target for many who either want the sword for themselves or fear the power it could give Naruto. Naruto then has to protect the sword while also trying to master it. He might seek out old sword - masters in the ninja world to train him. Along the way, he could face off against enemies who are also after the sword, and his friends might be in danger because of it.
There is a fanfic called 'Naruto's Pursuers'. In this, Itachi and Kisame have different ideas on how to approach finding Naruto. Itachi wants to be more stealthy, while Kisame is more inclined to use force. The story unfolds as they try to reconcile their differences and continue their search for Naruto.
The plot could involve Naruto using Samehada to gain an understanding of the Akatsuki's motives. Since Samehada has a connection to the Akatsuki through Kisame, it might hold some secrets. Naruto could use it to track down other Akatsuki members or find out more about their plans.
One possible plot for a 'naruto trained by kisame fanfic' is that Naruto is sent on a secret mission where he has to infiltrate an enemy base that is heavily guarded with water - based defenses. In order to succeed, he seeks out Kisame, who is an expert in water - style and stealth. Kisame trains Naruto not only in water - style jutsu but also in how to move silently in water, how to sense enemies through water vibrations, and how to use water as a cover. This training would enhance Naruto's skills and make him a more versatile shinobi, able to handle different types of combat situations.