Sasuke might develop more patience. Since Itachi is younger in this fanfiction, Sasuke has to be more understanding. He can't be as impulsive as he usually is. For example, he might have to learn to soothe Itachi when he's scared or upset, which helps Sasuke grow into a more empathetic person.
Well, Sasuke's development could involve becoming more responsible. He has to look after Itachi's well - being, like making sure he eats and sleeps properly. This new role forces him to think about someone else's needs before his own, which is a big change from his more self - focused nature in the original story.
Maybe Itachi gets sick. Then Sasuke has to take care of him, getting medicine and staying by his bedside. He'd worry about Itachi's health and do everything he can to make him better.
In many fanfictions, Sasuke starts as a character full of anger and a thirst for revenge. But in the context of a relationship with Itachi, he begins to soften. He starts to see Itachi in a different light, beyond just the person who killed their clan. Itachi, on the other hand, is often portrayed as a complex figure with many secrets. In these fanfictions, his love for Sasuke makes him more vulnerable and human. For example, in some stories, he reveals his true motives to Sasuke, which changes their dynamic.
Sasuke's character could develop in terms of his loyalty. By saving Sakura from Itachi, he shows his loyalty to his friends and comrades. He is no longer just the revenge - driven Sasuke. He has grown to care about others' safety.
In many fanfictions where Sasuke takes care of Sakura and Naruto, their relationships often deepen in unique ways. Sasuke's protective nature towards them can lead to a stronger bond. For Naruto, it might be a sign of Sasuke finally fully accepting their friendship. With Sakura, it could be the start of a more romantic relationship as Sasuke shows his softer side. This development usually involves them facing various challenges together, which in turn, brings them closer.
Sasuke becomes more gentle. Usually he is cold and aloof, but with baby Sakura, he has to be soft. He shows more patience as he takes care of her needs, like when she cries and he tries to figure out what's wrong.
In this kind of fanfiction, Itachi might use his powerful Sharingan abilities. He could perhaps create illusions to mislead Orochimaru and his minions, then quickly snatch Sasuke away. For example, he could make Orochimaru think that Sasuke is in a completely different location while he secretly approaches and rescues him.
Sasuke's character could develop in terms of his ninja skills. If Itachi kidnaps him, perhaps he will be forced to train in a new and harsher environment. This could make him stronger not only physically but also mentally. He might learn new jutsu or improve his existing ones at a much faster rate. Also, his understanding of the Uchiha clan's history and power could deepen during this time, which would shape his identity as an Uchiha.
Taking care of Naruto might make Sakura more empathetic. She has to understand Naruto's pain and needs, which could make her a better ninja overall. As for Sasuke, it could break down some of his walls. He has to be vulnerable in front of Naruto and Sakura, showing that he's not just the aloof and brooding ninja. This experience might also make him more open to the idea of relying on others and being part of a team again.
Sasuke would likely become more protective. Usually Sasuke is very focused on revenge and his own power, but when faced with baby Itachi, he would feel the need to shield him from all harm. His cold exterior might soften a bit as he looks at the innocence of baby Itachi.
Some popular themes include the exploration of their brotherly bond at a younger age. It could be about Sasuke looking up to Itachi in a more innocent time before all the tragedy. Another theme might be their training together, with Sasuke eager to learn from his older brother. Also, the family dynamic within the Uchiha clan when they were younger can be a focus, like how Itachi's actions even then were subtly influenced by the clan's expectations.