Sakura's character could develop in terms of her understanding of the ninja world. Itachi and Shisui have different outlooks compared to her. Through training with them, she might gain new perspectives on things like loyalty, sacrifice, and the greater good in the ninja world, which in turn shapes her character.
She could develop a more strategic mind. Shisui and Itachi are known for their intelligence in battle. Sakura would learn from them how to analyze situations better, plan ahead, and anticipate her opponents' moves. This would make her a more well - rounded ninja rather than just relying on her brute strength.
Sakura's character could develop by becoming more confident. Training with Itachi, who is a highly skilled ninja, would expose her to new levels of combat and strategy. This would make her trust in her own abilities more. For example, she might start taking more risks in battles after learning from Itachi.
Sakura's evolution would be quite remarkable. She would start to think more like an Uchiha. Their way of analyzing situations and opponents would seep into her own mindset. This could make her more calculating and less impulsive in battles. Her physical strength, which she already has a good amount of, could be refined further with the training she gets from Shisui and Itachi. Her social standing in the village might also change as she is seen training with two of the most powerful and respected Uchiha. People would start to view her as a serious combatant as well as a healer, and she would have a greater influence on village matters related to security and combat strategy.
Sakura's amusement could actually make Shisui more likely to continue annoying Itachi. Since she finds it funny, Shisui might see it as a sign that his actions are acceptable and entertaining. This could potentially strain the relationship between Shisui and Itachi further if Itachi doesn't like being the target of Shisui's annoyance.
There could also be a more friendly and equal - footing relationship. They might bond over shared interests outside of combat, like a love for a certain type of flower in the village or a particular kind of food. This would bring them closer together on a personal level. Itachi, who is usually reserved, might open up more around Sakura and Shisui, and they could form a tight - knit group of friends who support each other through the difficulties in the shinobi world.
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.
Sakura may become more confident because she has such a strong support system. Knowing that Team 7 is always there to protect her gives her the freedom to take more risks in her medical ninja skills development. For example, she might try out new experimental healing techniques without fearing for her life too much.
Itachi and Shisui both being Uchiha have a deep bond based on their clan heritage. When Sakura enters the picture, she might initially feel like an outsider. But as they work together, Sakura's intelligence and combat skills earn her respect from the two Uchiha. Itachi might be initially cold towards Sakura but gradually come to respect her, while Shisui is more open - minded and quickly befriends her. They could form a triangle of mutual respect and support where they each bring different skills to the table.
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.
Sakura's character could develop in terms of her emotional intelligence. She might break free from her insecurities and jealousies. For instance, she realizes that her feelings for Sasuke were more of an infatuation based on his popularity rather than true love. So she focuses on building a deeper and more meaningful connection with Naruto. She learns to understand his dreams and goals better and supports him in a more effective way, which in turn makes her a more well - rounded and likable character.