Kakashi and Evangeline could also be paired. Kakashi's cool and mysterious demeanor might intrigue Evangeline, and her vast magical power and long life experience could offer Kakashi new perspectives. They could have some interesting interactions as they are both quite powerful in their respective worlds.
It could be one of the dark mages from the Mahou Negima Sensei world who sees Naruto as an intruder and a threat to their plans. Maybe they want to steal his chakra for their own dark magic purposes.
Well, one possibility is that Naruto could end up in the world of Mahou Negima Sensei by some sort of magical accident. Maybe he'd be confused at first, trying to figure out the new magic - based rules and different social norms. He might then use his ninja skills in unexpected ways, like using his speed to dodge magical attacks. And he could form new friendships with the characters from Mahou Negima Sensei, teaching them about ninjutsu in return.
One idea could be a crossover where Naruto characters end up in the Mahou Sensei Negima world and have to adapt to the magic there. Maybe Naruto tries to learn magic instead of chakra techniques.
Naruto is often paired with Ebisu Sensei in fanfiction. Since Ebisu was assigned to train Naruto at one point, many fanfictions build on that relationship, showing how Naruto grows under his tutelage and how Ebisu has to adapt to Naruto's unorthodox ways.
In a Naruto fanfiction, Orochimaru could be paired with the Sandaime in a more complex way. Not just as an enemy, but perhaps in a story where the Sandaime tries to redeem Orochimaru. Another character would be Minato. Even though they were from different generations, they both had a connection to Konoha's leadership. You could write about how the Sandaime influenced Minato or vice versa. And Iruka could also be paired with the Sandaime. Iruka is a teacher, and the Sandaime was also very much involved in the education and growth of the shinobi in Konoha. So, a story about how the Sandaime and Iruka work together to improve the academy or deal with problem students could be really interesting.
Often, Naruto and Sasuke are paired with Sakura Sensei in fanfiction. Since they are the main members of Team 7, many stories involve her interactions with them. For example, she might be teaching them new techniques or helping them deal with personal issues.
Well, it could be the children of his friends. For instance, Boruto could be one of his students, and Naruto could use his own father - son relationship with Boruto as a teaching tool, sharing stories of his own father to inspire Boruto. Another student could be Sarada, Sasuke's daughter. Naruto could teach her some of the skills he learned from Jiraiya, passing on that knowledge.
Obviously, Naruto himself would be one of the main characters as he is the sensei. His students could be a group of new genin. For instance, the children of his old friends like Boruto and Sarada could be among his students.
Sasuke could be a great character to be paired with a blind Naruto. Their relationship is already complex in the original series, and with Naruto being blind, Sasuke might have to take on a more protective role at times while also respecting Naruto's new - found strength in his other senses. It could add a whole new layer to their rivalry and friendship.
Rock Lee could be an interesting partner for an Aburame in fanfiction. Lee's physical strength and taijutsu skills could complement the Aburame's more long - range bug - based attacks. The Aburame could use their bugs to distract opponents while Lee closes in for a powerful physical strike. Additionally, Hinata could be paired with an Aburame. Her byakugan could help detect enemies that the Aburame's bugs might miss, and together they could form a strong defensive and offensive team.