Another scenario in the fanfic could be that Hermione starts to mentor young witches and wizards. She wants to pass on the things she learned from her adventures with Harry. She could be very strict with them, because she doesn't want them to make the same mistakes she and Harry did. At the same time, she's always secretly hoping that one of these young students will have some idea on how to get Harry back.
In a fanfic, Hermione might initially be in denial. She would keep expecting Harry to return any day. She would go to their old haunts in Hogwarts, like the library or the Gryffindor common room, and just sit there, reminiscing. As time passes, she realizes she has to move on. She starts teaching at Hogwarts and imparts her knowledge and the values Harry also held dear to the new generation of students.
It could happen in the Forbidden Forest. Maybe they are both there on some sort of secret mission or just exploring. They come across a beautiful, hidden glade filled with magical creatures that are friendly and seem to encourage their connection. In this idyllic and somewhat secluded setting, they share their first kiss.
One possible reason could be a creative plot twist by the fanfic writer. Maybe they want to explore how Harry would grow and develop on his own without Hermione's support. Another reason might be to introduce new and different story arcs that involve separation, like Hermione having to leave for a dangerous mission that she can't involve Harry in.
In such a fanfiction, one possibility is that Hermione leaves the Burrow to bring Harry some important information. Maybe she's discovered a new lead on the Horcruxes. She could be racing against time to reach Harry before Voldemort's forces find out about it too.
Well, it might also lead to a split in the wizarding community. Some might side with Ron and Hermione, believing they had a good reason to abandon Harry. Others would be outraged and try to find Harry and bring him back. This could create chaos and internal conflict within the wizarding world, making it vulnerable to outside threats as well.
Well, it could cause quite a stir in the wizarding world. First, the relationship between Harry and Draco has always been complex and full of rivalry. If Harry leaves Draco for Ginny, the Malfoy family might feel a sense of victory in a strange way, as Draco has been in this sort of unspoken competition with Harry. For Ginny, it would be a big step forward in her relationship with Harry. And among their friends, like Hermione and Ron, they might have mixed feelings. Hermione might be worried about how this would change the dynamics among them all, while Ron would probably be more focused on how it affects Harry's happiness.
One possible reason could be the trauma he has faced. Harry has endured a great deal of pain, from the loss of his parents to the constant battles and threats in the wizarding world. He might want to escape all that and find peace away from it.
Perhaps in the fanfic, there was a prophecy that said a child born of Lucius would have great power and be a key to some major event in the wizarding world. But Lucius didn't want this to be known, so he abandoned Hermione at birth. Hermione then grew up in the muggle world, unaware of her true heritage. When she enters the wizarding world, things start to happen that gradually lead to the discovery of her relation to Lucius. This could lead to a very interesting exploration of her character's identity crisis and how she copes with being related to someone she once despised.
Well, they might be really impressed by Harry. Maybe they would offer him a warm welcome, cook him a big meal, and start asking him all about his adventures at Hogwarts. After all, Hermione has told them so much about him, and seeing him in person would be quite exciting for them.
It could be about Harry Potter achieving ultimate power and ruling the wizarding world. Maybe he overcomes new and even more dangerous dark forces and in the process, he becomes the king. He could make new laws and bring about great changes to Hogwarts and the entire wizarding community.