Maybe it's because the victim had some special protection or magical ability that blocked it.
It could be that Draco didn't cast the spell correctly or with enough power. Or perhaps there was some external interference messing up the magic.
In the world of fanfic, it's a complex matter. From one perspective, using Crucio goes against Harry Potter's moral code in the original series. He is a hero who stands against the Dark Arts. However, in fanfic, authors might explore 'what - if' scenarios. But still, it's not an ethical act as Crucio is an unforgivable curse that causes extreme pain.
Draco may use Crucio on Harry due to his own insecurities. He might feel overshadowed by Harry all the time. His family's expectations to uphold their pure - blood superiority could also play a role. He could think that by using Crucio on Harry, he can assert his power and show that he's not to be trifled with. It could also be that he's caught up in the moment of a heated argument or rivalry and loses his temper completely.
Using Crucio on Harry would completely transform their relationship. Harry would be traumatized by the experience, and his view of Draco would be forever tainted. He'd see Draco as a heartless bully who is willing to use the darkest of magic. Draco, by doing this, has put himself in a position where any potential for friendship or even a civil relationship is gone. It would be the start of a long - running enmity, with the memory of the Crucio spell always lingering between them, fueling their animosity.
It could be that there are some underlying reasons within the plot of the fanfic. For example, Harry might have some sort of trauma or moral stance that prevents him from competing. Or perhaps he's more focused on other aspects of his life, like exploring magic in a non - competitive way, or building relationships. So he simply chooses not to compete.
Maybe it's a way of stating that the integrity of the original Harry Potter character is not influenced by fanfic. Since fanfic can sometimes deviate greatly from the original source, saying 'harry potter doesn't care fanfic' is like saying the original character remains untouched by these fan - created ideas. Fanfic often has different interpretations of characters, and this statement could be a way to uphold the original view of Harry Potter.
He could lose the trust of his friends. In the Harry Potter world, his friends know him as a good person. Using Crucio would shock them and make them question his integrity.
Well, it could be that the authors of fanfiction want to explore different aspects of the Harry Potter universe other than fighting. Maybe they're more interested in the relationships between characters or the daily life at Hogwarts.
Well, Harry Potter is a character in the original story. Fanfiction often takes the original story in all kinds of wild and different directions. Harry, being from the original, proper story, may not be able to understand these new and sometimes out - of - the - box interpretations that fanfiction presents. It's like he's from a very specific world, and fanfiction creates a whole bunch of new worlds based on that, which he has no knowledge of.
In the world of fanfiction, it's a complex matter. From one perspective, it's not ethical as Crucio is an Unforgivable Curse in the Harry Potter universe. It causes intense pain and is considered dark magic. However, in the realm of fanfiction, authors might explore different scenarios where Harry is forced into using it out of desperation or is under the influence of dark forces, which can be seen as a way to delve deeper into his character and the moral gray areas.
Maybe Harry is a pacifist in this fanfic. He could have moral objections to fighting, believing that there are better ways to resolve conflicts, such as through dialogue or negotiation.