Well, it could start with Naruto being sent on a special mission where he encounters Sasori. Sasori, seeing potential in Naruto, decides to train him. The training would likely be tough as Sasori is a strict teacher. Naruto would have to adapt to Sasori's methods. He might learn how to control multiple puppets at once, and this new skill could help him in battles against stronger opponents in the future. For example, when facing Akatsuki members or other powerful foes.
The Akatsuki could still be the main antagonists. Even though Sasori is training Naruto, the rest of the Akatsuki might view Naruto as a threat and try to eliminate him. Also, Orochimaru could be an antagonist. He might be interested in the new skills Naruto is learning from Sasori and try to steal them for his own experiments.
Yes, there might be such fanfics in the vast world of Naruto fanfiction. Some fanfiction authors like to create unique and unexpected family relationships for the characters. However, this goes completely against the original Naruto storyline, which makes it a very interesting and out - of - the - box concept for fan - created content.
A possible plot could involve a situation where Sasori has some sort of valuable information that the Leaf Village needs. Naruto, being the bold and unpredictable one, decides to impersonate Sasori to get close to the source of that information. He might have to use his shadow clones to create the illusion of Sasori's puppet - like abilities. And during this impersonation, he could learn more about Sasori's past and what made him the way he was, while also trying to achieve the mission goal without getting caught.
I'm not sure of a specific 'naruto impersonates sasori fanfic' off the top of my head. You could try searching on fanfic websites like Fanfiction.net or Archive of Our Own. They have a large collection of Naruto - related fanfictions and you might be able to find one there.
Maybe in the fanfic, Naruto is on a mission to retrieve some important information that Sasori has. When Naruto talks to Sasori, it turns into a battle of wits. Sasori tries to deceive Naruto with false information while Naruto uses his intuition and sharp mind to see through the lies. Along the way, they also discuss their different upbringings and how it shaped their current selves.
It could still be Orochimaru. Even though the focus is on Naruto and Sasori talking, Orochimaru might be pulling strings in the background. He could be using Sasori's connection to Naruto to further his own evil plans, like getting access to some powerful jutsu that Naruto might possess or know about.
Kosuke might be a character created specifically for this fanfic. He could be someone with a unique background, like perhaps he was once a disciple of a great ninja but then went on his own path. And now he sees potential in Naruto and decides to train him. He could have abilities that are different from the main characters in the original Naruto series, which is why he has something new to offer to Naruto in terms of training.
In this fanfic, Lilith could be an original character created by the author. She might be a powerful and mysterious figure with special abilities that make her suitable to train Naruto.
She could be someone with a special bloodline or ability. Maybe she has a unique form of chakra that gives her certain powers. In the context of training Naruto, her skills and knowledge are what make her important. She could be a mysterious figure who has been observing Naruto for a while and decides to take him under her wing to help him reach his full potential. For instance, she might have the ability to see the latent potential in others and wants to shape Naruto into a great ninja not just for his own sake, but also for the greater good of the ninja world.