She could start off as a naive and somewhat rebellious girl. As she gets involved in the ninja world more, especially with the influence of Naruto as the Hokage, she becomes more responsible. For example, she might see the sacrifices that Naruto has made and realize she needs to step up. She could develop her ninja skills, like improving her stealth and combat abilities. Also, she might develop better relationships with her peers and family as she matures.
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.
One idea could be that the daughter of an Anbu member is discovered to have a unique Kekkei Genkai. This leads to her being closely watched by the Hokage, Naruto in this case. Maybe she has the power to manipulate time on a small scale, which could create all sorts of interesting scenarios in the ninja world. For example, she could use it to prevent small disasters or help in battles without others realizing how she's doing it at first.
One possible scenario in such a fanfiction could be Naruto as Hokage having to deal with political situations in the village while Sasuke, as an Anbu, is sent on dangerous covert missions. Naruto might rely on Sasuke's intelligence and combat skills from his Anbu work to protect the village from external threats. They could also have some internal conflicts due to their different roles and the secrecy associated with Sasuke's Anbu work.
A really interesting fanfiction idea could be that Sasuke in the Anbu discovers a conspiracy within the village that even Naruto as Hokage is unaware of. Sasuke then has to decide whether to go to Naruto directly or investigate further on his own. This would create a lot of tension and drama, as Sasuke's loyalty to the village and his relationship with Naruto are both at stake.
Naruto's character often develops a more serious and stealthy side. He has to learn to keep his emotions in check, which is a big change from his usually exuberant self. For example, he might not be as quick to shout out his goals or feelings.
Sakura's character often develops more strength and independence in Anbu - related fanfiction. She has to be self - reliant in the dangerous and secretive world of the Anbu.
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.
In a fanfic scenario, Naruto as Hokage might have some concerns about Sasuke being in the Anbu. He could worry that Sasuke's past and his more solitary nature might not fit well with the Anbu's group dynamics. However, Sasuke proves himself by using his unique skills and insights to protect the village. Meanwhile, Naruto tries to integrate Sasuke more into the village's core, leading to some interesting character - development moments for both of them.
One idea for the main plot is that a group of rogue ninjas has developed a new and dangerous jutsu that can disrupt the balance of power in the ninja world. Naruto, in his role as Hokage, decides to take action. Sasuke, as an Anbu, is sent to infiltrate the group. As Sasuke gets closer to the truth, he finds that the leader of the rogue ninjas has a personal vendetta against Naruto. This forces Sasuke to race against time to stop the jutsu and protect Naruto and the village. Along the way, Sasuke also has to come to terms with his own past actions and how they might affect the current situation.
One common theme is redemption. Sasuke, having had a troubled past, may find redemption through his work as an ANBU under Naruto's leadership as hokage. Another theme is friendship. Despite their past differences, they rekindle their friendship in many of these stories. Also, protection of the village is a big theme. Naruto as the hokage and Sasuke as an ANBU are both committed to safeguarding the village from all threats.