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.
His personality changes quite a bit. He starts to show emotions more openly. Instead of just focusing on his own goals, he now has to think about the well - being of baby Sakura. He becomes more nurturing, for example, he might sing a lullaby to her, which is something the old Sasuke would never have done. He also becomes more selfless as he puts Sakura's needs before his own.
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.
Well, perhaps when Sasuke protects baby Sakura from a small danger, like a wild animal approaching. He stands in front of her, kunai in hand, his eyes full of a fierce protectiveness. And also when he tucks her in at night, making sure she's warm and comfortable, it's really sweet.
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 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.
The relationship often becomes more strained. Sasuke's punishment can make Sakura feel resentful at first. But over time, it can also lead to her becoming more independent as she tries to prove herself to him.
Their relationship would likely become more intimate and committed. With a baby on the way, Sasuke would feel a greater sense of responsibility towards Sakura. He might be more protective and stay closer to her.
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.
Their relationship could become stronger. With a son, they have a new bond that ties them together even more. They might communicate more often and share their parenting experiences. They could also rely on each other more in terms of protecting their family.
One possible plotline could be that Naruto gets seriously injured during a mission. Sasuke and Sakura, with their combined skills, take him in and nurse him back to health. They might have to deal with Naruto's stubbornness when it comes to resting and following medical advice. Sakura could use her medical knowledge, while Sasuke could provide protection and also train Naruto in new techniques once he's recovered a bit, strengthening their bond as friends.
You can try websites like FanFiction.net. There are tons of Naruto - related fanfictions there, and you're likely to find many stories where Sasuke takes care of Sakura. Just use the search function on the site.