The main characters are obviously Naruto, as he is the one doing the training. Then there's Sasuke, who is always eager to become stronger and might be a bit of a challenge for Naruto to train. Sakura is also a main character, she is constantly looking to improve her skills. And of course, Kakashi is still around, he might be observing Naruto's training methods and offering some advice here and there.
Obviously, Naruto from the Naruto universe and the members of Team RWBY, which are Ruby, Weiss, Blake, and Yang. Naruto would be the trainer, and Team RWBY would be the ones being trained.
In this fanfiction, the plot might revolve around Naruto helping Team RWBY with their teamwork. Since Naruto has experience working in a team, he could show them how to better coordinate their attacks and defenses. He could also share his experiences of facing powerful enemies and how to strategize against them. For example, he could teach Ruby how to better lead the team based on his own growth as a leader in his own world.
There could be a story where Naruto trains Team 7 for a big mission. He decides to take them to a secret location he discovered during his own travels. There, they encounter strange creatures that require them to use their skills in new and creative ways. Naruto has to step up as a leader and trainer, guiding Sasuke, Sakura, and even Kakashi in some aspects of combat and strategy.
Well, the plot could involve Naruto teaching the female team members unique ninja techniques. Maybe he'd focus on their individual strengths and help them develop special jutsus based on that. For example, if one is good at long - range attacks, he might train her to enhance her range and accuracy even more.
Tenten could be a member. She is already good with various weapons. Naruto could train her to combine her weapon skills with chakra control for more powerful attacks. Hinata might also be in the team. Given her gentle nature and Byakugan abilities, Naruto could train her to be more assertive in combat while enhancing her use of the Byakugan.
In a 'naruto trains team 8 fanfic', the plot could revolve around Naruto's unique training methods. He could take Team 8 on a journey to different locations to train. For example, they could go to a forest filled with rare chakra - rich plants that enhance their abilities while training. Naruto would also share his experiences from his own training with Jiraiya, inspiring Team 8 to push their limits. He might introduce them to new forms of sparring that involve not just physical combat but also mental and chakra control challenges.
The plot could involve Naruto passing on his unique skills. For example, he might teach the genin his signature Rasengan. He could also share his experiences of facing tough opponents, like Sasuke. Maybe he'd take the team on a mission to a place filled with mystery, like the Land of Waves, and teach them how to handle real - world situations.
There could be a group of bandits who have been causing trouble around the areas where Naruto is training Team 8. They don't like the idea of a strong team emerging in their territory. So, they start attacking the team during their training sessions. These bandits might have some crude but effective combat techniques and they also use the terrain to their advantage, which makes them a formidable antagonist for Team 8 during their training with Naruto.
In a fanfiction like this, Orochimaru could train Naruto in the ways of stealth and assassination, skills that Orochimaru is quite proficient in. Naruto would initially be hesitant but realizes that these skills can be used for good. For example, to infiltrate enemy bases and gather intelligence to prevent wars. This would change Naruto's fighting style and make him more versatile in the shinobi world.