Another interesting idea is a fanfiction set during Bellatrix's time in Azkaban. Harry Potter, through some magical accident, is able to communicate with her in her cell. They start to have conversations that gradually change both of their perspectives. Harry learns more about the roots of the Dark Arts from her, and Bellatrix starts to question her own past actions.
A fanfiction that focuses on a parallel universe where Bellatrix Black was not a Death Eater. In this story, she could be a mentor to Harry Potter, teaching him some unique magic skills that she has, and they could form an unlikely alliance against other dark forces. It would be interesting to see how their personalities would interact in such a different scenario.
One idea could be that Harry discovers his true parentage and has to struggle with his identity. He might be torn between the side of good that he has known all his life and the dark legacy of Bellatrix. Another plot could involve him facing discrimination from both the wizarding world that hates Bellatrix and the Death Eaters who might see him as a tool or a threat. For example, he could try to use his knowledge of Bellatrix's magic, which might be more complex and dark - tinged, to fight against Voldemort in a different way than in the original story.
A fanfic about Bellatrix's early years at Hogwarts could be interesting. It could explore her friendships, rivalries, and how she first got involved with the Dark Arts. Or perhaps a story where Bellatrix teams up with other characters, not for evil purposes, but to fight a greater, common threat that endangers the wizarding world as a whole.
One idea could be a story where Bellatrix and Narcissa are forced to work with Harry Potter due to some dark magic that binds them, and a lemon tree (represented by 'lemon' in a symbolic way perhaps) holds the key to breaking the spell. Another could be a tale set in an alternate universe where they all have to protect a magical lemon that has the power to save the wizarding world.
In some fanfictions, there might be a plot where Bellatrix and Harry are forced to team up against a greater evil. For example, a new dark wizard emerges who is more powerful than Voldemort, and they have to put aside their differences. Bellatrix, with her knowledge of the dark arts, and Harry, with his courage and Gryffindor spirit, make an unlikely but effective duo.
One interesting fanfic could be about Bellatrix's backstory and how it might have intersected with Harry Potter in ways not shown in the original books. For example, a fanfic could explore a scenario where Bellatrix had a chance encounter with Harry as a child before she fully committed to Voldemort's cause.
Some 'Harry Potter Bellatrix Black' fanfics focus on her relationship with other characters in the series. There are fanfics that explore her bond with Voldemort in a more complex way than in the original books. It could show her as not just a blindly loyal follower, but having her own motives and desires within that relationship. Also, fanfics might show her interactions with the Black family members in a new light, perhaps revealing secrets or hidden tensions that were not fully explored in the official story.
There are fanfictions that explore Bellatrix's past and her relationship with the Black family in the context of Harry Potter. For example, a story might delve into her time at Hogwarts, her early indoctrination into the Dark Arts, and how that influenced her actions in the main series. This could provide a deeper understanding of her character and how she became so fanatically devoted to Voldemort. It might also show how her actions affected the wider wizarding world in ways that weren't fully explored in the original books.
I'm sorry, but lemon fanfiction often contains inappropriate content. We should focus on more positive and canon - compliant fan works. For example, there are many great fanfictions that explore the complex relationship between Harry Potter and Bellatrix Black in a non - inappropriate way, like those focusing on their battles or the impact of Bellatrix's actions on Harry.
A really interesting plot could be Bellatrix being given a chance at redemption. In this fanfiction, she could start to question Voldemort's motives after seeing the destruction he causes. She might then try to secretly help the Order of the Phoenix. Also, a plot about her teaching a young Death Eater the ways of the Dark Arts and having second thoughts about it mid - way through could be fascinating.
One idea could be a time - travel plot where Harry somehow travels back in time and has to interact with Bellatrix in her younger days. This could lead to him trying to change her path before she becomes a Death Eater.