The wizarding community might turn against him. Crucio is an unforgivable curse, and if Harry were to use it, even in fanfic, he would be seen as a threat. People would fear that he has turned to the dark side, and he could face legal consequences within the wizarding world.
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.
On a more personal level, Harry might lose his own sense of self. He has always fought against the Dark Arts, and using Crucio would be a huge moral compromise. This could lead to internal conflict, guilt, and a change in his personality. He might become more withdrawn and haunted by his actions, as using such a curse goes against everything he has believed in.
One possible consequence could be a moral breakdown within Harry himself. He's always been against dark magic, so using Crucio might make him question his own values. Another consequence could be alienation from his friends and allies. They would likely be shocked and appalled that he resorted to such a cruel curse.
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.
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.
In fanfiction, the consequences can be complex. The snake - based healing might create a bond between the healed person and the snake that has unforeseen implications. For example, they might start to have some snake - like characteristics or instincts. Additionally, the method of using the snake to heal could attract unwanted attention from dark wizards who want to use this power for evil purposes. Harry might then have to protect the knowledge of this healing method and those who have been healed, which could put him in many dangerous situations.
One possible consequence could be his estrangement from his friends. In the original Harry Potter world, his friends are firmly on the side of good. If he starts using dark rituals, they might not be able to understand or accept his actions. Another consequence could be a corruption of his own soul, as dark magic is often depicted as having a corrupting influence in the series.
In the fanfic, the Dementors could also be a major factor in the consequences. Since Harry escaped from their custody, they might be more vigilant and harsher in their patrols. This could lead to a more oppressive atmosphere in the wizarding world, with people living in fear of the Dementors' increased presence. Also, Voldemort or his followers might try to take advantage of the chaos caused by Harry's escape to further their own dark agendas.
In some fanfics, when Harry leaves the Dursleys, he might immediately feel a sense of freedom. He could start exploring the wizarding world more independently, without the constraints of his Muggle relatives. Maybe he'd meet new friends or allies earlier than in the original story.
If Harry Potter makes a Horcrux in fanfiction, it would be a major departure from his character. Horcruxes are dark magic, and Harry is firmly on the side of good. One consequence could be that he starts to be corrupted by the dark magic within the Horcrux. His friends might turn against him as they see him slipping into darkness. He could also lose his connection to the positive magic that has always defined him, like his ability to use the Patronus charm.
In a fanfic, a Harry Potter potion accident could lead to all sorts of strange consequences. For example, the character might end up with unexpected magical abilities or physical transformations. Maybe they accidentally turn into an animal, like Neville did in one of the real books but in a more extreme way. It could also affect their relationships, as others might be scared or fascinated by the new form or power they possess.
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.