Jiraiya could be a candidate if he were somehow made immortal. He already has a deep connection with Naruto and has taught him a great deal. His knowledge of Sage Mode and other jutsu could be further expanded if he were immortal, and he could continue to guide Naruto for a much longer time.
The plot could involve the immortal teacher passing on ancient and powerful jutsu to Naruto. For example, the teacher might know a unique form of chakra control that Naruto can use to enhance his Rasengan. This new knowledge could make Naruto stand out even more in battles against strong opponents like Sasuke or the Akatsuki members.
Perhaps Naruto as a teacher would focus on teaching his students about the different chakra natures. He could share his knowledge of how to master the Nine - Tails' chakra and help students with their own chakra control. He might also take them on field trips to important ninja locations in the Hidden Leaf Village to give them a practical understanding of their heritage.
Growth is a common theme. Naruto's growth as a ninja under the teacher's guidance is often explored. Another theme is mentorship, like how the teacher imparts knowledge and values to Naruto.
Kurenai could be a great strict teacher in a Naruto fanfic. She is a jonin and has experience in teaching. Her skills in genjutsu could be used to create strict training scenarios for Naruto. Also, Asuma could be a candidate. He is known for his straightforwardness. In a fanfic, he could be a strict teacher, making Naruto focus on his combat skills and strategy more. He could be tough on Naruto, expecting high standards from him.
In many 'naruto immortal fanfic', the immortality often comes with a price. It might be isolation, as the character watches their loved ones die over time. This adds a deep emotional layer to the story, making it more than just a simple action - packed Naruto fanfic. It also allows for exploration of different power levels and abilities that come with immortality, like enhanced chakra control or the ability to master jutsu over an extended period.
Common themes include self - discovery. Naruto discovers new aspects of himself with the help of the female teacher. Another theme is the power of guidance. The female teacher's guidance is shown to be very powerful in shaping Naruto. And the theme of non - traditional relationships. Since it's not the typical student - teacher relationship like he has in the original series, this new kind of relationship is explored in these fics.
A good 'naruto x female teacher fanfic' is 'Naruto's Unusual Training with the Female Teacher'. It's about the female teacher devising unique training methods for Naruto that help him improve rapidly. 'The Female Teacher's Secret Knowledge' is also great. Here, the female teacher imparts some rare and important knowledge to Naruto that gives him an edge. And 'Naruto and the Female Teacher: A Special Bond' explores the emotional bond that develops between them.
A common plot twist is when a Naruto teacher is suddenly made to teach a group of students who are not ninjas at all. For instance, if Kakashi has to teach normal high - school students in a non - ninja world. It completely changes his teaching approach and the dynamic of the story.
There could be a group of orphaned ninja - in - training that Naruto takes under his wing. These students would look up to him not only as a teacher but also as a symbol of hope, much like how Naruto once looked up to Iruka - sensei. They could come from various backgrounds and clans, and Naruto would have to find ways to bring out the best in each of them.