The relationships in the story are also affected. His friends might turn against him if they discover he is stealing life force. For example, Hermione would likely be horrified and try to stop him. This changes the dynamics of their friendship. Also, the wizarding world would view him as a threat rather than a savior.
It adds a new element of defense. Traditionally, Harry uses his wand and spells for protection. But with a shield, it gives him a more physical form of defense. It can change the way battles are fought in the story.
It changes it significantly. The original narrative is mainly about Harry's fight against Voldemort. But in these fanfictions, the focus shifts to relationships and pregnancy. For example, instead of battles, there are scenes of domesticity and anticipation of new life within the harem.
When Harry Potter causes the breach in fanfiction, it's a huge shift in the story. It forces the writer to explore different aspects of his character. Maybe there was a misunderstanding or he was under some sort of dark magic influence. This change in narrative also affects the overall tone of the fanfiction. It could become darker, more mysterious, or more of a redemption story as Harry tries to right his wrongs. It can also introduce new sub - plots as the wizarding world tries to deal with the aftermath of the breach.
Well, it can make the story much darker. In normal Harry Potter, the main villains are Voldemort and his Death Eaters. But when you introduce the 'Devil' concept, it adds a more supernatural and perhaps more primal evil. For instance, it could make Harry's journey more about spiritual and moral battles rather than just physical ones against dark wizards.
It changes the dynamic completely. In the original story, Harry was male and had his own set of relationships. But with Fem Harry as James' mate, it adds a new layer of complexity. For example, the way they interact with other characters might be different. Other characters might view their relationship with different expectations or prejudices. Also, it can change the way the story's plot unfolds, as Fem Harry may face different challenges or opportunities compared to the original Harry.
One interpretation could be a dark twist on Harry's character. Maybe in this fanfiction, he's been corrupted by some dark magic that makes him steal life force to gain power. It could also be a misinterpretation of some powerful spell he uses that seems to drain energy, which is wrongly seen as stealing life force.
The narrative could shift towards exploring the unknown aspects of magic. Since the Grim is not a common familiar, it might be connected to some ancient or forbidden magic. This would lead Harry on a journey to uncover the secrets behind it. He might have to face challenges and enemies that are specifically related to the Grim's existence.
It changes the narrative by introducing a new layer of secrecy. Instead of the straightforward story of Harry as a male hero, there's now this hidden aspect that can affect every event. For example, duels might be different if opponents underestimate Harry thinking she's a girl.
The overall mood of the story becomes more of an underdog tale. Harry has to fight against the perception that he's a squib. This could lead to him having to prove himself constantly. In the original story, he had his magic as a sort of safety net. Here, he has to find other ways to show his value. He may start to explore areas of the wizarding world that are not so reliant on raw magical power, like magical history or the study of magical creatures from a non - combat perspective.
The overall theme of the story changes. Instead of a story about a human wizard's journey, it becomes a story about identity and transformation. It may explore themes like what it means to be human, and whether giving up humanity is truly a sacrifice or a gain. This can attract different types of readers who are interested in these deeper, more philosophical themes in fanfiction.