Well, Kurama might train Naruto by teaching him how to better control and access chakra. Since Kurama has a vast amount of chakra, it could show Naruto unique ways to harness and use it. For example, it could guide Naruto in creating more powerful and complex jutsu by using their combined chakra in a more efficient way.
Naruto would gain better combat awareness. Kurama's experience in battles can be passed on to Naruto. He'll be able to read his opponents better, know when to attack and when to defend. This will make him a more formidable opponent in combat situations.
Kurama might become angry at first. He's a powerful being and being neglected would likely wound his pride. He could start causing some minor disruptions inside Naruto, like making it harder for Naruto to access his chakra.
Naruto's confidence would surely grow. With Kurama's training, he'd feel more in control of his power, which would boost his self - assurance.
Naruto's self - confidence gets a huge boost. Kurama's teachings are like a seal of approval. If Kurama believes in him enough to teach him, then Naruto must be something special. This new - found confidence shows in his posture, his speech, and how he faces challenges. He no longer doubts himself as much when it comes to difficult tasks, whether it's a tough battle or a diplomatic negotiation within the ninja world.
It could develop as Naruto spends more time in the mental space where Kurama resides. They start to communicate better, understand each other's motives, and gradually form a deeper connection. This might involve Naruto learning about Kurama's pain and loneliness over the years, which makes Kurama more open to Naruto. As a result, their bond becomes stronger and more symbiotic, allowing them to share power more effectively and support each other in different situations.
Maybe Naruto uses his positive energy. Naruto is known for his optimistic and persevering nature. He could flood Kurama with his positive emotions, like hope, friendship, and love. These strong positive feelings might be so overwhelming for Kurama that they gradually soothe his angry and wild nature, thus calming him down.
In such a fanfiction, Naruto might gain unique and powerful abilities. Kurama could teach Naruto more efficient ways of using chakra, like advanced chakra control for his shadow clones. This could make Naruto's clones stronger and more versatile in combat.
Naruto would become more confident. With Kurama's training, he'd know he has more power and skills at his disposal, so he'd face challenges with less hesitation.
In some fanfictions, Naruto might summon Kurama through a new and special jutsu. For example, he could use a jutsu that combines his own chakra with the unique bond he has with Kurama. This jutsu might be created during a time of great need, like when facing an extremely powerful enemy that normal attacks can't defeat.
Kurama could comfort Naruto by sharing his own experiences. Since Kurama has been alive for a long time, he might tell Naruto about times when he faced difficult situations and how he overcame them. This could give Naruto new perspectives and the strength to keep going. For instance, Kurama could talk about how he endured his long imprisonment and still managed to keep his spirit intact, which in turn would inspire Naruto.