There could be a story where Hermione is paired with an older Hogwarts professor in a fanfiction. This kind of story is quite popular as it plays on the idea of the forbidden love aspect. The older man, with his years of experience and knowledge, is drawn to Hermione's intelligence and determination, and their relationship develops in a complex way throughout the story.
A plotline might involve Hermione getting involved in a time - travel related event. She ends up in a different era of the wizarding world and meets a wizard who defies the norms of his time. He's progressive, respects women, and Hermione is immediately drawn to him. As they work together to figure out how to get her back to her own time, their relationship blossoms. Or perhaps in a plot where the wizarding world is under a new threat, Hermione teams up with a wizard she initially dislikes. But as they face the danger together, she discovers his hidden depths and realizes he might be the 'real man' she's been looking for.
In Hermione's world, a 'real man' could be someone like Harry Potter. He's brave, loyal, and has a strong sense of justice. He's faced numerous challenges and always come out fighting. He also deeply cares about his friends, including Hermione. Another option could be Ron. Despite his insecurities, he's always there for Hermione in the end, showing his true character through his loyalty and growth over the years.
Fanfiction.net could also be a place to look. It's one of the largest fanfiction platforms. However, the tagging system might not be as precise as AO3. But still, by using relevant keywords like 'Hermione' and 'older man' in the search, you might come across some interesting stories.
Often, in fanfiction, 'All Hermione Wants' might explore Hermione's unfulfilled wishes. It could be about her wanting to make a greater impact on the wizarding world, for example, by changing some of the archaic laws or traditions. Or it could focus on her dreams of being more recognized for her intelligence and skills rather than just being seen as the 'clever girl'. This type of fanfiction gives the author a chance to expand on Hermione's character and her innermost thoughts and desires.
In fanfiction, Hermione wanting revenge on Dumbledore could be due to various reasons. One possibility is that she discovers some hidden secrets about his actions that she deems unethical. For example, if she found out that Dumbledore had been using students for some greater, yet morally ambiguous plan. However, this goes against the general perception of Dumbledore in the original series. Fanfiction often takes such unexpected turns to explore different character dynamics and plotlines.
This could be a very dark and interesting fanfiction concept. Maybe Hermione has been deceived by some false information about Dumbledore, thinking he has committed unforgivable acts. Or perhaps she's under some sort of dark magic influence that makes her believe murdering him is the right thing to do. It could also be a plot device to explore the complex character of Hermione and how far she can be pushed from her normal moral compass.
There might be some out there. You could start by looking on fanfiction platforms like Archive of Our Own. Just search for the relevant tags. However, this kind of pairing can be a bit of a crossover or AU (Alternate Universe) since in the original series, Remus has a relationship with Tonks, not Hermione. But fanfiction often plays with different pairings and scenarios.
The author can give him a unique backstory. For instance, he could have grown up in a difficult family situation that made him long for love and stability, which he sees in Hermione. This would make his pursuit of her more understandable. Maybe he has some special magical abilities that he uses to try and impress Hermione in a non - intrusive way, like being able to communicate with rare magical creatures. This would add depth to his character.
Having Hermione as a boy in fanfiction could be quite a departure from the original. It could challenge traditional gender roles within the wizarding world and add a fresh layer of complexity to the storylines.