One event could be the loss of a very important person in his life. This loss could shatter his previous beliefs and make him think that being soft and warm - hearted was a weakness. He might also have been exposed to a group of people who took advantage of his kindness. As a result, he decided to toughen up and become cold. Also, perhaps he went through a series of difficult battles where his lack of strength nearly cost him his life, so he trained hard to become strong and in the process, became cold as a defense mechanism.
The Ministry of Magic could turn into an antagonist. If Harry's new cold and strong ways are seen as a threat or too radical, they might try to stop him. This could lead to a conflict between Harry and the wizarding government.
One possible plotline could be that after facing a great betrayal, Harry decides to close himself off emotionally and focus solely on becoming stronger in magic. He might train in isolation, away from his friends, and develop new and powerful spells.
One possible event could be a false accusation within the wizarding community. Maybe someone frames Harry for a serious crime, and his so - called friends believe it without really giving him a chance to defend himself. Another event could be a power struggle within Hogwarts or the wizarding world in general, where people see Harry as a threat and turn against him to gain an advantage.
His relationships would change a great deal. The friends who once knew Harry as a somewhat vulnerable and kind - hearted person would now have to deal with this new, cold - edged strength. Those friends who were closer to him for his softer side might drift away. However, some might see this as a positive change in a way, like they might think he's finally growing up and becoming more self - reliant. But still, there would be a lot of adjusting to do on both sides.
One way could be through persistent kindness. If they keep showing him genuine care and kindness without expecting anything in return, over time, he might start to open up.
The characters around Harry would likely change. Some minor characters might become more important, and some major characters could be sidelined. For instance, Neville Longbottom could become the main hero instead of Harry in some scenarios.
If Naruto becomes cold - hearted, his relationships with the villagers would change drastically. The villagers, who once saw him as a hero, would now be faced with a cold and unapproachable Naruto. Children who used to look up to him would be scared. His friends from the Akatsuki days, like Nagato, might even see this new Naruto as a threat. Overall, his relationships would go from being warm and friendly to cold and distant, filled with suspicion and unease.
The perception of Harry would be turned upside down. In the original series, he is the symbol of good and the one who defeats Voldemort. But in this fanfiction, he is the one causing harm, which makes readers question everything they thought they knew about his character. His motives, actions, and relationships would all be seen in a new and disturbing light.
The plot would become very dark. Harry would no longer be the hero, so the fight against Voldemort would likely take a different turn. Maybe Voldemort would see Harry as an ally instead of an enemy. The other characters would have to either try to change Harry back or find a new way to defeat Voldemort without Harry's help.
The story would be completely transformed if Harry Potter becomes a ghost in fanfiction. Firstly, the way he experiences the wizarding world would be novel. He could float around Hogwarts, seeing things from new angles. His relationship with Hermione and Ron would become more complex. They would have to deal with the fact that their friend is no longer fully alive. In terms of the overall plot, the fight against evil could take a different turn. Harry as a ghost could perhaps access areas that were previously off - limits to the living, like certain dark corners of the Forbidden Forest. This could lead to new discoveries about dark magic or ancient secrets. His new form could also attract the attention of other supernatural entities in the wizarding world, leading to new alliances or conflicts that weren't possible when he was alive.