Maybe Kosuke is a hidden gem in the Naruto universe within this fanfic. He could be a character who has been living in the shadows, observing Naruto's growth from afar. He decides to step in and train Naruto when he realizes that Naruto needs some extra guidance that the normal Konoha instructors can't provide. His identity could be shrouded in mystery at first, and as the fanfic progresses, more about his past and his connection to the Naruto world is revealed.
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.
Perhaps in this fanfic, Kosuke trains Naruto not just in physical combat but also in the mental aspects of being a ninja. He might teach Naruto how to handle difficult situations, make strategic decisions, and overcome his inner demons. This could lead to Naruto becoming a more well - rounded and powerful ninja.
A common theme is friendship. Since Naruto is all about bonds, in fanfictions with Kosuke, their friendship is often explored. Another theme could be growth. As they face challenges together, both Naruto and Kosuke grow as characters.
Well, there are several out there. 'Naruto and Kosuke: Unlikely Allies' is a great one. In this fanfiction, it starts with Naruto and Kosuke being at odds but then gradually they come to understand each other and form a strong bond. It's interesting to see how their different personalities play off each other in various situations. There's also 'Kosuke's Secret in the Naruto World' which reveals some hidden aspects of Kosuke's character and how it ties into the overall Naruto story.
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.
There could be new antagonists created specifically for this fanfic. Maybe some dark forces that were sealed away by Asura long ago are awakened. They would oppose Naruto because they see him as a threat to their resurrection or their evil plans.
The main characters are Naruto, the well - known ninja from the Hidden Leaf Village, and Vergil, who is likely from another realm or universe with his own set of powerful skills. In this fanfic, their interaction forms the core of the story as Naruto looks to Vergil for training and growth.
It could be some rogue shinobi who are after Pakura's knowledge. Since she's training Naruto, they might see it as an opportunity to get to both of them and steal their techniques. Maybe they were once her enemies or just power - hungry individuals.
Maybe it's a member of a long - lost ninja clan. This clan member could have some special skills and knowledge that they want to pass on to Naruto. They choose to train him in secret to protect their clan's secrets from falling into the wrong hands.
The Otsutsuki clan members other than Kaguya could be antagonists. Since Kaguya is training Naruto, they might see Naruto as a threat to their plans.