Yes, in the vast world of fanfiction, there are all kinds of creative and out - of - the - box ideas. Some authors might explore the concept of Hermione being Voldemort's daughter as a way to create a completely new and unexpected storyline. It can lead to a lot of interesting plot twists, like how Hermione would deal with this new identity and how it would change her relationships with other characters in the Harry Potter universe.
One idea could be that Hermione is raised in secrecy by someone who knew Voldemort's true identity but didn't want her to follow his dark path. She discovers her true parentage through a series of mysterious events, like finding an old diary of Voldemort's that reveals secrets. Then she has to struggle with her own identity, whether to embrace the part of her that is related to Voldemort or completely reject it and continue to fight for good.
In this type of fanfiction, it could be possible through some dark magic or a hidden plot twist. Maybe a spell was cast long ago that altered the truth about Hermione's parentage. However, it goes completely against the original story's lore.
If Hermione was Voldemort's daughter in fanfiction, she might struggle with her identity. She's always been on the side of good, but this new knowledge could make her question everything. Maybe she'd try to hide it from her friends at first.
Often, there is a theme of redemption. The idea that Hermione, as Voldemort's daughter, could be the key to redeeming the dark side of the wizarding world. She might be seen as having the potential to bring about change in the wizarding community because of her unique position. There could also be a theme of secrecy and discovery, with Hermione slowly uncovering the truth about her past and having to deal with the consequences of that knowledge.
She would likely start with a lot of confusion and self - loathing. After all, Voldemort is the most evil wizard. But as the story progresses, she might find strength in her own identity, separate from her father.
Hermione would likely become more conflicted. Her usual confidence and surety in her beliefs would be shaken. She might become more withdrawn as she struggles with the implications of her new identity. She may also start to show more signs of ruthlessness, a trait associated with Voldemort. For example, she could be less hesitant to use extreme measures to achieve her goals.
She might face a lot of internal conflict. On one hand, she has been raised with the values of Gryffindor, like courage and justice. But on the other hand, she has this dark heritage. This could lead to a really interesting character arc where she has to constantly battle her inner demons. For example, she might be tempted by the power that her relation to Voldemort could potentially bring, but she has to resist it to stay true to herself.
One common theme is identity crisis. Hermione would have to grapple with who she really is. Another is the power struggle. Given Voldemort's obsession with power, how would Hermione, being his daughter, deal with her own potential power? And there's also the theme of acceptance or rejection within the wizarding community, as she is a muggle - born who is now supposedly related to the most feared dark wizard.
There are some out there. However, this concept is quite a wild departure from the original 'Harry Potter' lore. Some fanfictions might explore this idea in an interesting way, like delving into how Hermione would react to such a revelation and how it could change the relationships in the wizarding world. But others could be poorly written or just too far - fetched for most fans.