At first, they might be a bit competitive as brothers often are. But as they face more and more challenges together, their bond would strengthen. They'd start to rely on each other more and more.
As they grow older, their relationship could evolve in many ways. Maybe Kiba would become more protective of Naruto, especially if Naruto got into some dangerous situations because of his often - impulsive nature. And Naruto would probably start to see Kiba as an even more important part of his family, sharing his thoughts and feelings with him more openly.
At first, their relationship might be a bit rocky. Gaara has been through a lot of trauma and Naruto, though friendly, might not be fully understood by Gaara immediately. But as time passes, they start to trust each other more. They could share their past experiences, like Naruto talking about his loneliness as a child because of the Nine - Tails, and Gaara sharing his own pain of being ostracized in the Hidden Sand. This sharing would bring them closer.
Their relationship would likely become more equal. In the original story, Minato was more of a distant, heroic figure to Naruto. But through time travel, they can interact as peers, sharing knowledge and experiences. This would deepen their bond.
At first, it might be awkward. Kakashi is used to being a mentor figure, and now he's in a position of being 'adopted'. But as time passes, Naruto's positive energy starts to rub off on Kakashi. Kakashi becomes more carefree and starts to enjoy life more, like Naruto does.
Their relationship would likely become more complex. They might start to protect each other more fiercely. For example, Sasuke might not leave the village in the first place because he now has a closer family tie to Naruto. Naruto would also be more insistent on getting Sasuke to stay and see him as an important part of his family.
If they were brothers in fanfiction, their relationship would become much more complex and multi - faceted. Kakashi, being the older brother, would feel a great sense of responsibility for Naruto. He would not only guide Naruto in his ninja training but also in his personal growth. Naruto, on the other hand, would look up to Kakashi not just as a powerful ninja but as his big brother. They would have inside jokes and a unique way of communicating that only siblings have. In times of trouble, they would rely on each other more instinctively. Their relationship would also have an impact on how others in the village view them. Some might envy their close bond, while others might respect them more for their family connection.
Their relationship might start off a bit rocky as they have different personalities. But as they face challenges together, like fighting against the Fire Nation, they start to understand and respect each other more. For example, Aang might initially not understand Sokka's practical and sometimes cynical view, but when it helps them out of a tough situation, he begins to value it.
At first, their relationship might be a bit awkward. Naruto is not used to Hinata's shy and gentle nature. But as time passes, he starts to appreciate her more. Hinata, on the other hand, becomes more confident because of Naruto's presence. Eventually, they become more comfortable with each other, sharing their hopes and fears.
Their relationship would likely start off with a lot of passion and hope. However, as the years go by, they would have to deal with the pressures of the wizarding world. For example, Severus' reputation might cause some to shun Lily as well. But they would learn to rely on each other more, becoming a united front. They would also have to adapt to each other's growth. As Severus becomes more open about his feelings and Lily becomes more confident in her choices, their relationship would transform into a deep and abiding love.
At first, they might be a bit distant as they get to know each other. But as time passes, they would become closer. Emmett's protective nature would come out more, and he would start looking out for Bella in every situation.
At first, their relationship would be full of the excitement of newlyweds. But as time passes, they would face more practical issues. For example, they might start to have small arguments about household chores. However, through communication, they would grow closer and understand each other better.