In this type of fanfiction, a common plotline could be that the early meeting between Naruto and Kurama results in Naruto having a different attitude towards his training. He becomes more confident and focused because he has the support of Kurama from the start. This might also lead to a different relationship with his teachers, like Iruka. For example, Iruka might notice the change in Naruto and be more curious about his newfound determination. Naruto could also use Kurama's power to participate in more difficult missions at an earlier stage, which would give him more opportunities to grow as a ninja.
One possible plotline could be Naruto quickly learning to control Kurama's power earlier than in the original story. This might lead to him being able to defeat stronger enemies sooner and gain more respect in the village. Another could be Kurama and Naruto forming a deeper bond right away, and Kurama sharing some of his ancient knowledge with Naruto, which helps Naruto in his ninja training.
One possible plotline could be that Naruto and Kurama start training together early on. This would give Naruto a huge power boost right from the start. He could learn to control Kurama's chakra in new and unique ways, leading to him being able to perform more advanced jutsu earlier in the story.
Obviously, Naruto and Kurama are the main characters. Naruto is the young ninja with big dreams and Kurama, the powerful nine - tailed fox sealed within him.
One interesting plotline could be Naruto learning new and unique jutsu with Kurama's help. For example, they might combine their chakra in a way that creates a completely different form of attack, like a chakra blast with both Naruto's positive energy and Kurama's wild power.
One interesting plotline could be Naruto achieving a perfect fusion with Kurama and using their combined power to defeat a new, extremely powerful enemy that neither could face alone. For example, an ancient demon that has been awakened from a long slumber.
One interesting plotline could be Naruto and Kurama working together to defeat a new, powerful enemy that neither could face alone. Their bond allows them to combine their powers in unique ways.
One possible plot could be that Naruto discovers a hidden ability within himself that allows him to communicate with Kurama on a deeper level much earlier. This leads to them teaming up to protect the village from a new and unexpected threat. For example, a group of rogue ninjas who have a special jutsu that can disrupt the chakra flow of the entire village. With Kurama's power and Naruto's determination, they manage to defeat the rogues and in the process, their friendship becomes stronger.
One interesting plotline could be Naruto and Kurama facing a new, powerful enemy that neither could defeat alone. They have to combine their unique abilities, like Naruto's Rasengan and Kurama's chakra power, to stand a chance. Another could be them exploring a new, mysterious part of the ninja world together.
One possible plotline could be that Dante is on a mission in a world that has some connection to Naruto's universe. There, he encounters Kurama. They start off as cautious of each other but then realize they can help each other. For example, Dante could need Kurama's knowledge of the local demonic forces, and Kurama could be interested in Dante's unique weapons.
Perhaps in the fanfiction, Naruto and Killer Bee engage in a friendly sparring match that turns into a learning experience for Naruto as he tries to master some of Bee's unique fighting styles and techniques. They could also bond over their experiences as jinchuriki, sharing their struggles and how they've coped with the power within them.
A great plotline could be that Naruto's early graduation catches the attention of some of the village's more secretive or powerful ninja. They start to keep a closer eye on him, either to protect him or to see if he can be of use to their own agendas. Maybe some old enemies of the village think he could be a weak point since he's so young and inexperienced, despite his early graduation.