The relationship could start off with curiosity. Naruto's sisters might see Anbu Naruto around and be intrigued by his silent and efficient ways. They start to follow his movements from a distance. As time passes, they might find opportunities to interact, like when Anbu Naruto is injured and they offer help. This leads to more frequent meetings and conversations. Slowly, feelings of love start to develop as they get to know each other better.
At first, it might be filled with suspicion. Naruto, being the Hokage, would be cautious of Itachi's past actions as an Anbu. But as they start to interact more, Naruto might see the good in Itachi that Sasuke saw. Itachi, on the other hand, would respect Naruto's position as Hokage and his power to bring change. Slowly, they could develop a mutual understanding and respect.
Their relationship might become more of a strategic partnership. Naruto would respect Kurama's power and knowledge more deeply as they face the complex and dangerous ANBU missions together.
Their relationship could become more competitive. Since ANBU is a place for elite ninjas, they might constantly strive to outdo each other in missions.
In the 'Naruto adopted by ANBU' fanfiction, Naruto's character development could be quite different. He would be exposed to a much more intense and dangerous environment from a young age. This could make him more jaded and world - weary compared to his original self. On the other hand, the ANBU's training might also give him a greater sense of purpose and focus. He could become more of a lone wolf type, relying on his own skills and the training he received from the ANBU rather than the support of his friends initially. But as the story progresses, he might learn to combine the two aspects of his life - his ANBU training and his bonds with his friends - to become a stronger and more well - rounded character.
They could develop a mentor - apprentice relationship. Kakashi already has some experience mentoring Naruto, and in the ANBU setting, he could teach Naruto more advanced and stealthy techniques. Naruto would look up to Kakashi even more and try to learn as much as he can.
Their relationship would be one of mutual respect. Naruto, as Hokage, would trust Sasuke's abilities as an Anbu member. Sasuke, on the other hand, would respect Naruto's leadership. They would be comrades again, but with a new dynamic due to their different positions in the village.
Naruto's character would likely become more reserved at first. He'd be constantly fighting his own demons while trying to fit into the ANBU. As he goes on missions, he'd start to learn more about the darker side of the ninja world. This new knowledge might make him more cynical initially, but over time, he could use it to grow stronger. His depression might also fuel his determination to prove himself in ANBU, leading to him becoming a more complex and mature character.
His character would develop in multiple ways. Firstly, the ANBU's harsh training and dangerous missions would toughen him up even more. Secondly, being around other ANBU members, some of whom might be cold and calculating, could make him more cynical or, on the other hand, make him strive to bring more warmth to the group. Also, his brokenness might make him more introspective, leading to a deeper understanding of his own power and purpose within the ANBU.
Naruto's character would likely become more reserved at first. The neglect he has faced has made him a bit jaded. But as he proves himself in ANBU, his confidence would start to return. He would also become more stealthy and calculating, traits he didn't really have to rely on before. His sense of loyalty to the village would be tested and strengthened as he faces more complex and dangerous situations within ANBU.
Naruto's character would develop a greater sense of responsibility. He would have to make tough decisions for the safety of the village and his team. His once - brash nature might be toned down as he realizes the importance of secrecy in ANBU operations. He would also gain more respect from the village as a whole, and this new - found respect could change how he views himself and his role in the ninja world.