Well, their brotherly relationship could also be shown in how they deal with the village's problems together. Naruto's strong will and Minato's wisdom could combine. They might face off against a new, powerful enemy that threatens Konoha. Naruto would be all about charging in, while Minato would plan a more strategic approach, and they'd have to learn to work with each other's styles.
One way to explore their relationship is through family memories. Since they are brothers in this fanfiction, they could have some shared family experiences that Naruto never had in the original story. Maybe they had a special place in the village where they used to play as kids, and as they grow older, they go back there to reminisce and strengthen their bond.
Their relationship can be explored through flashbacks. For example, Minato could have left behind memories or messages for toddler Naruto that are revealed as Naruto grows. Another way is to have Minato's spirit interact with toddler Naruto, like guiding him in his dreams. They could also explore their relationship by showing how Minato's traits are already starting to show in toddler Naruto, such as his determination.
One way to explore their relationship is to have Minato's friends, like Jiraiya, tell baby Naruto stories about his father. As Naruto listens, he starts to form an image of Minato in his mind. This could lead to Naruto trying to imitate Minato in different ways. Also, the fanfic could show how Minato's sacrifice for the village is slowly understood by baby Naruto as he grows up, deepening the emotional connection between them.
In a fanfiction where they are brothers, their relationship might start off rocky. Deidara is from Iwagakure and Naruto from Konohagakure. They could have grown up apart due to the political situation between the two villages. But when they discover they are brothers, they might struggle to come to terms with it. Naruto, being the more optimistic one, would probably be the first to reach out, while Deidara, with his more rebellious nature, would be hesitant. However, over time, they could form a strong bond based on their shared blood and mutual understanding of the shinobi world.
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.
In a fanfic, their relationship could be explored through shared adventures. Maybe they discover they are brothers early on. They could learn from each other's skills, like Naruto's Rasengan and Deidara's explosive art. They might face challenges together against common enemies, like the Akatsuki or other powerful foes. Their different personalities would also play a big role. Naruto's optimism and determination could contrast with Deidara's more explosive and impulsive nature.
Another aspect could be a time - travel fanfiction. Naruto gets sent back in time and meets a young Minato. They train together, and Naruto shares some of his future knowledge in a veiled way. This could lead to a different development of Minato's skills and a unique bond between them.
Their relationships could be explored through flashbacks. For instance, we could see how Minato interacted with Tsunade when he was alive. Maybe he sought her advice on certain matters, or they had some joint missions. This would give us insights into their respect for each other.
It would change a lot. For starters, Naruto might not have grown up as an outcast. With Minato as his brother, he could have had some family support and recognition from the start.
It would be very close. Naruto has always longed to know his father, so when he travels back in time to meet Minato, they would quickly bond. They'd probably start training together right away.
The relationship can be developed by having Minato appear in Naruto's memories more vividly. For example, Naruto could start having flashbacks of Minato's training sessions or family moments that he didn't know about before. This would make Naruto feel closer to his father.