In fanfiction, how could Kisame's sister interact with Naruto's friends?

Well, in some fanfictions, Naruto might defeat Kisame in a battle and take the sword as a trophy. Maybe he uses his newfound Sage Mode powers or some other advanced jutsu to overpower Kisame and claim the sword.

Yes, there might be such fanfictions in the vast world of fan-created content. Some fans like to create unique family relationships between different characters from various anime, and this could be one of those interesting concepts.

One possible plot could be that Sakura, as Kisame's sister, has been secretly trained in combat skills by him. When the shinobi world discovers this relationship, it causes a stir. Sakura has to prove herself not to be a threat like her brother was perceived in the original story.

She might be a bit intimidated by them at first. Since James' friends are known for their mischief and popularity. But as time goes on, she could become friends with them too. For example, Sirius might take her under his wing like a little sister as well, teaching her some of his prank - pulling tricks.

Kisame's sword could be a plot device by having it hold the essence of an ancient ninja art. Naruto, in his journey to become stronger, discovers that the sword can teach him this art. He has to first overcome the dark nature of the sword, which was influenced by Kisame. So, he battles with the sword's influence while trying to learn the art, creating a complex and engaging plot.

They could interact through Kakashi. For example, Kakashi could tell Naruto stories about his father, and Naruto could then start to see similarities between himself and Kakashi's father in terms of their values. Then, in a spiritual or dream - like encounter, Naruto could actually meet Kakashi's father and have a conversation about protecting the village.

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.

Sakura might be initially hostile towards Kisame, given his reputation as an Akatsuki member. She would probably attack or be on guard. But Kisame, with his calm and somewhat menacing demeanor, would likely try to taunt her at first. For example, he could say things like 'Little girl, you think you can take on the likes of me?' However, as the story progresses, if they are forced to be around each other, they could develop a begrudging respect. Sakura might respect Kisame's strength, and Kisame could come to respect Sakura's tenacity.

The characters from Harry Potter and Naruto would interact in interesting ways. For instance, Hermione might be fascinated by the ninja techniques and try to study them. Naruto, as her brother, would be very protective of fem Harry. He would introduce her to his friends like Sasuke and Sakura, and there could be some initial misunderstandings because of the different cultures.

Naruto's Rinnegan might allow him to sense Fuu's presence from afar, and Fuu's agility could be enhanced by the Rinnegan's power. For example, if they are in a battle, Naruto could use his Rinnegan to mark the enemies, and Fuu could quickly dart between them, taking them out one by one.