It could be really exciting. Guts' brutal and unyielding training methods might make Naruto even stronger. Naruto could learn to face his enemies with more tenacity from Guts. For example, Guts' way of fighting in close combat could be incorporated into Naruto's combat style, adding a new dimension to his abilities.
It could be someone from Guts' world who follows him into Naruto's world. Maybe one of the Apostles. They are powerful and evil beings. Their presence in the Naruto world would be a huge threat and could be a great antagonist as they would have powers that are different from what Naruto is used to dealing with.
There could be. Naruto is known for his never - give - up attitude and his journey to become stronger. Guts has his own arduous path filled with battles and self - discovery. A fanfic could be written to show how Naruto's character traits are like Guts', perhaps in how they deal with loss, friendship, and their overarching goals. It would be an interesting read for fans of both.
The plot could involve Naruto being transported to Guts' world. He teams up with Guts and they embark on a journey. Naruto tries to understand Guts' way of life and fighting. Along the way, Naruto uses his ninja skills to help Guts in battles against apostles. At the same time, Guts teaches Naruto about the harshness of his world, and they both grow from the experience.
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.
It could lead to Naruto becoming even stronger and more skilled than in the original story. Jiraiya's training methods might unlock new powers for him.
It depends on the specific fanfic. Some fanfics might have Guts killing Griffith as a major plot point, while others could take a different direction and not have that happen at all.