On the other hand, Sasuke might change in a more positive way in the long run. After going through the initial stages of grief and anger, he could start to value life more. He might begin to see the importance of the bonds he has with his remaining friends and work towards protecting them and the village in Sakura's memory.
He could also become more vengeful. If Sakura's death was caused by an enemy, Sasuke would stop at nothing to avenge her. His focus would shift solely to seeking revenge, and his already formidable skills would be honed even further in his quest for retribution.
One emotional moment could be Sasuke's realization of losing Sakura. His usually stoic facade might crumble as he holds her lifeless body, perhaps reminiscing about all their shared moments, from their early days as teammates to the more complex relationship they developed over time.
She might be initially heartbroken. Sakura, being in love with Sasuke, would surely be deeply affected when he neglects her. She could become withdrawn herself, losing some of her usual cheerfulness.
In this fanfic, Sasuke's character would change in terms of his cold exterior. He would soften up a great deal. He might start smiling more often, especially when he is around Sakura. His actions would also be more focused on pleasing her rather than just his own goals. For instance, he might accompany Sakura to the hospital where she works just to be with her, which is a big change from his usually self - centered nature.
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.
Sasuke might be in shock at first. He can't believe that Naruto is dying in his arms. He may feel a great sense of guilt, thinking that he could have done more to prevent it.
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.
In these fanfictions, Sasuke could develop a stronger sense of purpose that involves Sakura. Instead of being solely focused on his own goals or revenge, he starts to think about building a future with Sakura. His character might become more stable and less prone to impulsive actions as he has Sakura as a positive influence in his life.
Sasuke might become more empathetic. After the war, he has seen the destruction and pain it caused. With Sakura by his side, he could learn to express his emotions better. Sakura, too, could become more confident. She has proven herself during the war, and now she can continue to grow, especially in her relationship with Sasuke.
In some fanfictions, Sasuke changes his cold attitude towards Sakura. He realizes her importance in his life. He starts to communicate better with her, sharing his thoughts and feelings, which he never did before. This change makes their relationship grow stronger as they get to know each other better on an emotional level.
In these fanfics, one characteristic is the growth of their relationship. At first, Sasuke may be aloof, but gradually he opens up to Sakura. Sakura, on the other hand, is always steadfast in her love. Another is the mutual support. They often face difficulties together, be it in battles or in rebuilding their world, and they rely on each other's strength. Also, there's the element of deep understanding. They come to understand each other's past traumas and insecurities, which brings them closer.