The story could develop in many ways. One possibility is that Naruto might hold a grudge against Sakura for a while, which could create tension in their team. Or Naruto could forgive her quickly, showing his big - hearted nature.
Well, Naruto would probably be in a great deal of pain. He might double over and be unable to move for a while. It could also lead to a big argument between him and Sakura, with Naruto feeling betrayed and Sakura perhaps realizing she overreacted.
On Naruto's side, he would probably feel guilty after realizing what he had done. This guilt could make him try to make amends, but Sakura's initial reaction of anger and hurt would still be a big obstacle in their relationship. Their interactions would be filled with tension and awkwardness.
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.
It would likely strain their relationship at first. Sakura would probably be very angry and hurt, both physically and emotionally. She might start to question Naruto's true nature and whether he really was the friend she thought he was.
The story could develop in a direction of revenge. Naruto's friends might seek revenge on Sakura. Or, Sakura could realize her mistake immediately and try to save Naruto, leading to a journey of redemption for her. There could also be a split in the ninja community, with some believing Sakura was right and others believing she was wrong.
After Sasuke's confession, their relationship could develop slowly. Sakura might be a bit hesitant at first, still processing what Sasuke said. They would start by spending more time together, getting to know each other on a deeper level. For example, they could go on walks and talk about their past traumas and how they overcame them. This would strengthen their bond gradually.
Perhaps the story then delves into Naruto exploring new love interests. He may meet a girl who shares his values and dreams more closely. Meanwhile, Sakura might start to realize what she has lost in Naruto. This could lead to some tension or even a new dynamic between them where Sakura tries to win back Naruto's attention but he is no longer interested.
In the fanfic, Sakura might be influenced by some dark force or a bad character. She starts to act against Naruto and their friends. Naruto, being the hero, tries to reason with her first but when she attacks him, he punches her back. This punch snaps her out of the influence, and they join forces again to fight the real enemy.
In this fanfiction, the relationship between Naruto and Sakura could develop in a rather unexpected way. Maybe they start off on the wrong foot, constantly arguing about little things like who does the chores or how to decorate their living place. But as they face external threats together, they realize that they are stronger as a team. This realization makes them more understanding and patient with each other. Eventually, they start to appreciate each other's qualities. Naruto admires Sakura's strength and kindness, and Sakura respects Naruto's courage and leadership. This mutual admiration then blossoms into a romantic relationship.
Their relationship could develop through shared experiences. For instance, they might volunteer together to help the orphaned children in the village. This would bring them closer as they both have a soft spot for kids. Naruto, being an orphan himself, and Hinata, who is very nurturing.