It could end with Harry accepting the rejection gracefully and moving on. He might focus more on his friendships or other aspects of his life like his magic studies or adventures.
The story might end with the elf having a change of heart later, but by then Harry has already moved on. So, there's a sense of missed opportunity and a bittersweet ending.
Another way it could end is that Harry tries to change himself to win the elf over, but in the process, he realizes that he's losing his true self. So, he stops trying and they part ways, with Harry having learned a valuable lesson about self - acceptance.
One possible reason could be that there are cultural differences between Harry and the elf. Elves might have different values and traditions when it comes to relationships. For example, their society might have strict rules about mating or partnering with non - elves.
The story might then focus on Hermione's side of things. She could feel guilty about rejecting Harry and try to be a better friend to him. Or, she might try to set Harry up with someone else she thinks would be a good match for him. Meanwhile, Harry could start to develop feelings for another character as he tries to move on from Hermione's rejection.
He might be initially heartbroken. Harry has always been a bit of an emotional person, so he could go into a state of depression for a while. He might isolate himself from his friends and focus only on his studies or fighting against the dark forces, using it as a way to distract himself from the pain of the rejection.
In the fanfic, Harry could have a range of reactions. At first, he might be in denial, thinking that Hermione is just joking or that she will change her mind. Then, when he realizes it's for real, he could get angry, feeling like he's been unfairly judged or rejected. However, over time, he may come to accept it and focus on other aspects of his life, like his fight against the dark forces or his relationships with other friends.
Natsu might be initially shocked and confused. He's not the type to expect rejection, so he could be at a loss for words at first. For instance, he might just stand there with his mouth open, not believing what he just heard.
Often, it ends with Harry feeling more confident and at peace. After meeting his parents, he has a newfound sense of purpose and is ready to face his challenges head - on.
It could end with her realizing she needs to make a change and starting to exercise and eat healthier, and gradually losing the weight she gained.
Often, Harry and Severus have a very tense relationship. In fanfictions with an elf involved, the elf can act as a mediator. For example, the elf might be the one to show Severus that Harry is not as bad as he thought. On the other hand, the elf could also be a source of conflict if Severus has some old - fashioned views about elves being enslaved and Harry is against it.
Often, the betrayal is sudden. For example, if it's his friends who betray him, it might start with a small incident that Harry doesn't think much of at first. But then it snowballs into a full - blown situation where his friends turn their backs on him completely. Then Harry has to struggle to deal with this new situation while also facing other threats in the wizarding world.