His anger could lead to a complete breakdown of their relationship in some fanfictions. Naruto might feel so betrayed or frustrated that he decides he doesn't want to be around Sakura anymore. But in other fanfictions, it could be a turning point for their relationship. Naruto's anger might make Sakura see him in a new light, as someone who has his own boundaries and feelings, and she might start to respect him more, which could improve their relationship.
It could strain their friendship. Naruto might start avoiding Sakura, which would make her realize she's done something wrong and try to fix it.
It could strain their relationship. Goku might start to avoid ChiChi if he's mad at her. For instance, he could spend more time training alone in the mountains or with his friends rather than at home with ChiChi.
Ginny's anger could make Harry realize his mistakes and try to make amends. This might strengthen their relationship in the long run as they work through their issues. However, in the short term, there could be a lot of tension and arguments. Ginny might also start to question whether Harry is really the right person for her, and Harry could start to feel insecure about their relationship.
Sasuke's jealousy can initially strain their relationship. For example, if he's jealous of Sakura's interactions with other characters, he might become cold or distant, which could confuse and hurt Sakura. However, it can also be a turning point. If Sakura realizes that Sasuke is jealous because he has feelings for her, it can lead to a deeper understanding between them.
On the other hand, Naruto's anger could also be a wake - up call for Boruto. If Boruto respects his father, seeing Naruto angry might make him realize his mistakes and try to change his ways, which could ultimately strengthen their relationship as they work through the issues.
Their relationship could become strained. Ginny might start to question her love for Harry. In some fanfics, she could even consider leaving him. This would put a lot of pressure on Harry to fix things and make amends.
Well, Sasuke's cold attitude could be a reason. He is often distant and unresponsive to Sakura's feelings in the original story, and in fanfiction, this can be exaggerated, making Sakura angry. For instance, if he ignores her attempts at conversation or help.
One possible reason could be that Naruto has his own unrequited love for someone else and he is trying to distance himself from Sakura to avoid leading her on. For example, if he has deep feelings for Hinata, he might be cold towards Sakura to make his own feelings clear.
On the other hand, her jealousy could also be a driving force for her to improve herself. She might see Naruto's success and instead of just being jealous, use it as motivation to become stronger. This could lead to a more equal relationship in the long run, as she catches up to him in terms of skills and abilities.
It might create a rift between them. If Naruto feels that Sakura is always nagging and yelling, he could start to avoid her. In some fanfictions, this could lead to a period of estrangement where they don't work well together as a team. For example, Naruto might choose to go on solo missions instead.