The Akatsuki might take advantage of the chaos. With the village in disarray due to Sakura's death, they could launch more attacks. The balance of power in the Naruto world would be disrupted. The other villages might also see this as an opportunity to gain an edge over Konoha.
Sakura would likely be devastated. Naruto has been her friend and teammate for a long time. His death would leave a huge void in her life, and she'd probably go through a long period of mourning.
Naruto might also try to remember Sakura in a positive way. He would cherish the memories they had together. He could start initiatives in the village in her name, like promoting medical ninja training more, since Sakura was a great medical ninja. He would slowly turn his grief into a force for good in the village.
Their relationship would be centered around their mourning. They would constantly talk about Naruto, sharing memories and regrets. This could lead to a deeper, more empathetic relationship as they both try to make sense of the loss. They might also start to see each other in a new light, as they both have different perspectives on Naruto's life and death, and through sharing these, they grow closer as a couple.
Well, it would completely change the Naruto storyline. Firstly, it goes against the original pairing in the series. Naruto is with Hinata and Sakura is with Sasuke. If this were to happen, the whole dynamic of the Hidden Leaf Village would be in chaos. All the relationships and character developments that were built over the series would need to be re - thought. It would also change how Naruto's son, Boruto, comes into existence. Maybe there would be a different kind of ninja with different powers and abilities.
The storyline would change drastically. Instead of following the path of protecting Konoha, Naruto would be involved in Akatsuki's missions. These missions are often related to capturing tailed beasts, which is the opposite of what he has been doing. So, there would be a complete reversal of his goals.
If Sakura had a kekkei genkai that allowed her to communicate with animals, it could have a huge impact. For example, she could get help from animals during battles or use them to gather intelligence. This would make her more independent and less reliant on Naruto and Sasuke. It would also add a new dimension to her character and her role in the story.
It could become more strained at first. Sakura would be hurt, both physically and emotionally, and she might hold a grudge against Naruto. However, if Naruto had a good reason for punching her, like protecting her from a greater danger she didn't see, she might eventually come to understand and their relationship could become stronger in the long run.
Sakura would be devastated. She would probably blame herself for Naruto's death since he died protecting her. She might go into a state of deep depression at first, withdrawing from everyone.
It would change the relationship dynamics significantly. In the original story, Naruto had an unrequited love for Sakura for a long time. If they start dating in a fanfic, it would shift the focus from Naruto's one - sided pursuit to a mutual relationship. Their interactions would be more about building a life together rather than Naruto just trying to impress Sakura. It could also change the way their friends interact with them, as a couple's presence always affects the group dynamic.
His relationship with Sakura would be very different. Instead of the old friendship/romantic tension, Sakura might be initially afraid of him as a vampire. She would have to overcome her fear and see that Naruto is still the same person inside. His relationship with Sasuke could also be strained. Sasuke might see Naruto's transformation as a sign of weakness or a new threat.