A really interesting plot could be a time - travel fanfiction. Suppose Sakura somehow travels back in time and meets a younger Kisame. She tries to change his path, knowing the future he will have. This could involve a lot of complex character development as Sakura has to deal with the differences in their values and the knowledge she has of his future actions.
Well, a plot could involve Kisame's sister being a healer. Naruto gets seriously injured in a battle and she is the only one who can save him. As she heals him, they start to share their stories and dreams. This leads to her realizing that the Akatsuki's ways might not be right. Also, she could be in a love triangle between Naruto and a member of the Akatsuki, which would add a lot of drama to the story. There could also be a plot where she discovers a prophecy that Naruto is the key to saving the ninja world, and she decides to protect him at all costs.
One interesting plot could be that Naruto discovers a hidden power within Kisame's sword. Maybe during a battle, the sword starts to react to Naruto's chakra in an unexpected way, leading to a new form of combat for Naruto.
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.
One possible plot could be that Sakura, on a mission in a far - off land, encounters Kisame. At first, they are enemies as Kisame is from the Akatsuki and Sakura is a Konoha ninja. But then, they find themselves in a situation where they have to work together to survive against a greater threat, like a powerful ancient beast. As they fight side by side, they start to understand each other's motives and pasts, and Sakura begins to see that Kisame is not just a mindless villain.
Well, it could start with Sakura growing up in a different environment due to her relation to Kisame. Maybe she has some of his physical traits like his blue skin in a more human - like way. And she might be trained in different fighting styles that are a mix of Kisame's and the regular ninja training she gets in the village.
Perhaps in the fanfiction, there's a parallel universe where Sakura and Syaoran are enemies. They have to figure out what has gone wrong and how to set things right. This would involve a lot of self - discovery and exploring the nature of their relationship in different circumstances. They would need to find a way to break the spell or whatever is causing this rift between them and restore their normal relationship in their own universe.
One interesting plot could be Kisame and Naruto teaming up accidentally during a mission against a common enemy. They start off distrusting each other but gradually learn to respect each other's skills.
One idea could be that Ataru and Sakura get lost in a magical forest together. They have to rely on each other to find their way out, facing various strange creatures along the way. This could lead to a deeper understanding between them.
One idea could be Sakura using her intelligence to outwit the prison guards and help other inmates. For example, she might find a loophole in the prison rules that benefits the inmates in some way.
One idea could be a crossover universe where Goku somehow ends up in the Naruto world and meets Sakura. They could team up to fight a new common enemy that is causing chaos in both their worlds. Maybe this enemy has the ability to steal energy like the Saiyans but also uses genjutsu like the ninjas.