At first, they might be at odds with each other. Itachi is cold and distant in his Anbu ways, while Sakura is full of passion. But when they are in a life - or - death situation together, they start to understand each other better. Sakura could show Itachi the importance of having emotions in their line of work, and Itachi could show Sakura how to be more strategic.
As they go on more missions together, they could develop a deeper bond of trust. Sakura might save Kakashi from a dangerous situation, like a trap set by the enemy. This would make Kakashi see her as an equal rather than just a protege. They would start to rely on each other more and more, sharing their thoughts and fears during missions.
For Sakura, her character can be developed by showing her growth in the Anbu environment. She could start off as a bit naive in some ways but gradually become more hardened and street - smart. For example, she might learn how to quickly assess threats from Itachi. Itachi's character could be developed by exploring his internal conflicts. Maybe in the fanfiction, he has to choose between his loyalty to the Anbu and his own moral compass when a certain situation arises. Sakura's presence could influence his decisions.
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.
She would become more stealthy and less impulsive. Since ANBU work requires a lot of secrecy and patience, Itachi's training would force her to change her approach. She might start thinking more strategically and be less likely to jump into a fight without a plan. This could completely transform her from the somewhat brash character she was before.
Their relationship could start with Itachi being a silent protector. He might observe Sakura from afar, and she gradually becomes aware of his presence. As time passes, she starts to trust him, and this trust is the first step in their relationship development.
Sakura would likely develop her combat skills further. In the ANBU environment, she would face more dangerous opponents, which would force her to become more strategic. Itachi, already a complex character, might show more of his internal struggle between his loyalty to the village and his love for his family. Shisui could develop in terms of his leadership skills, as he and Itachi might lead Sakura in missions. He could also become more jaded as he faces the darker side of the ninja world.
In a vampire fanfiction, their relationship might be a tumultuous one. There could be many obstacles in their way. For instance, the vampire society they live in might not accept their relationship. But through their shared experiences, like fighting against a common enemy or helping other vampires in need, they could grow closer and form a strong bond that defies the odds.
Their relationship could start as a reluctant partnership. Itachi is used to working alone, and Sakura is initially in awe of Itachi's power. But as they face the challenges of the time - travel situation together, they begin to trust each other. For example, when dealing with threats in the past, they rely on each other's skills. Sakura's medical ninjutsu saves Itachi from a near - fatal wound, and Itachi's combat abilities protect Sakura from dangerous enemies.
As the story progresses, they may find common ground. Maybe they both have a goal related to the Akatsuki's activities that aligns them. Itachi's past and his reasons for being in the Akatsuki could be revealed to Sakura, and she might start to see him in a different light. For instance, if she learns about his true motives to protect the village, she could develop a new - found respect for him. This could lead to a deeper connection and their relationship could evolve from mere acquaintances to friends or even something more in some fanfictions.
Their relationship could be developed through a series of flashbacks. For instance, Itachi could recall moments from Naruto's childhood that he observed while in the ANBU. These memories could make him see Naruto in a new light. Meanwhile, Naruto could learn about Itachi's past and the sacrifices he made. This exchange of knowledge could build a bond between them based on empathy and respect. In addition, they could train together in secret, with Itachi teaching Naruto some of his ANBU skills, which would also strengthen their relationship.