One possible reason could be a misunderstanding. Maybe Hermione does something that Harry misinterprets, like siding with someone he doesn't trust in a Hogwarts issue. Another reason might be jealousy. If Hermione starts getting closer to another character, Harry could feel left out and stop talking to her. Or perhaps a dark influence affects Harry's mind, making him think Hermione is a threat to him in some way.
Often, there's a period of sadness and confusion for both of them. Hermione might try to figure out what she did wrong and reach out to Harry. Meanwhile, Harry might start to realize that he misses her friendship. Then, there could be a reconciliation scene where they finally talk things out and their friendship is restored, stronger than before.
One possible reason could be that the author wants to create a sense of mystery. By making Harry Potter stop talking, it makes the readers wonder what he is thinking or feeling, and adds an air of enigma to his character. Maybe he has witnessed something so shocking that he is rendered speechless for a while.
Sakura might be initially confused. She could be thinking about what she did wrong to make Naruto stop talking to her. Since they have been friends for a long time, this sudden change would be very puzzling for her.
One reason could be a misunderstanding. Maybe Hermione does something that Harry misinterprets, like getting too involved with her studies and seeming to neglect their friendship. Another could be outside influence. For example, if there are other characters who spread false rumors about Hermione to Harry, it might drive a wedge between them. Or perhaps Harry starts to develop different values and beliefs that clash with Hermione's, leading to a breakdown in their friendship.
The writer can use body language. For instance, they can describe how Harry's eyes look downcast, his shoulders slump, and he just shakes his head slightly instead of speaking. This non - verbal communication can show that he has chosen not to talk.
Well, in a fanfic, Narukaka might stop talking to Sakura due to a misunderstanding. Maybe Sakura did something that Narukaka misinterpreted, like accidentally breaking a promise or saying something hurtful without realizing it.
The story could develop with Hermione trying to figure out what went wrong. She might start investigating, talking to other friends they have in common to see if they know anything. Meanwhile, Harry could start making new friends who are more in line with his new mindset. But he might start to realize that he misses Hermione's unique qualities.
One possible reason could be a misunderstanding. Maybe Sakura said something that Naruto misinterpreted as being hurtful or dismissive of his feelings. For example, if she made a comment about his abilities in a negative way during a crucial moment, it could lead to him distancing himself.