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.
His friends' reactions would vary. Hinata would be really happy for Naruto. She would be gentle with the little girl and offer to make her clothes or cook for her. Kiba might be a bit skeptical at first, thinking Naruto might not be fully prepared for raising a child. But when he sees how much Naruto cares, he would be more accepting. Choji would probably be excited and share his snacks with the little girl right away, showing his warm - heartedness towards Naruto's new family member.
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.
There are quite a few. For instance, when Naruto first realizes that Kurama actually cares about him. It's a moment of revelation for Naruto, and the way Kurama shows his concern, even if it's in his own brusque way, is really sweet. Also, during a particularly cold night, Kurama might use his chakra to keep Naruto warm. This simple act of kindness shows that Kurama is not just a powerful beast but also has a caring side. And when Naruto is doubting himself, Kurama tells him stories of his own experiences to inspire Naruto, which is a very heartwarming exchange between them.
Kakashi would be more of a supportive figure. He has seen Naruto and Sakura grow up, and he would likely be happy for them. He might offer some advice to Naruto on how to handle this new relationship, especially considering the challenges they might face as ninjas. For Sakura, he could give her words of encouragement to be true to her feelings.
Sasuke might initially be a bit aloof but secretly be happy for them. He's always had a complex relationship with Naruto and Sakura, and deep down, he would see that they are good for each other.
Sakura might tease Naruto about it a little. She'd probably think it's a bit strange that he's interested in something so different from their own world. But she'd also be curious to know what it's all about.
Yes, in a sense Kurama can be considered part of Naruto fanfiction. Fanfiction often takes existing elements from a story and expands or twists them. Kurama, the nine - tailed fox in Naruto, has been the subject of numerous fan - created stories that go beyond what was shown in the original manga or anime. These fanfictions might explore different relationships Kurama could have had, or different backstories for it that were not covered in the official Naruto storyline.
Often in fanfictions, Kurama's human form and Naruto have a more complex relationship. They could argue at times, especially when Naruto wants to take risks that Kurama thinks are too dangerous. But at the same time, they also share some really tender moments. For instance, Kurama's human form might comfort Naruto when he's feeling down about his past or his struggles with the village. They would have a deep bond that goes beyond just being a jinchuriki and a tailed beast.
Kurama's care can have a profound influence on Naruto's growth. For one, Kurama's power, which Naruto can access, gives him a physical boost in battles. This newfound strength helps Naruto face tougher opponents and survive dangerous situations. Emotionally, Kurama's presence provides a sense of companionship. Naruto no longer feels completely alone, and this gives him more confidence. Kurama's advice, based on his long existence and knowledge, also guides Naruto in making better decisions. For example, when dealing with complex political situations in the ninja world, Kurama might offer insights that Naruto wouldn't have considered on his own.