Well, one possible reason could be that he was targeted by some rival students or a dark magic group within the fan - fiction world. Maybe they were jealous of his abilities or had some vendetta against him.
It might be that he got involved in a conflict over a magical object or a secret. In fan fiction, there are often many made - up elements. So, perhaps he was on the verge of uncovering something that someone didn't want him to know, and they beat him to stop him. For example, if there was a new type of magic spell or a hidden chamber in the school, and he was getting too close to the truth.
It could be some of the Slytherin students who have a long - standing enmity with Harry in the original story. They might be acting on their own or be influenced by some darker forces in the fan - fiction.
One possible reason could be fear. The villagers might be afraid of Naruto because of the Nine - Tailed Fox sealed within him. They see him as a potential threat and lash out in their fear. Another reason could be jealousy. Naruto is a powerful ninja in the making, and some villagers, who are not as strong or talented, might take out their insecurities on him.
One possible reason could be a dark wizard's plot. Maybe a powerful dark wizard wanted to use Harry against the Weasley family or the entire wizarding community, so they managed to take him. Another reason might be some kind of magical accident or curse that caused Harry to be removed from the Weasley family environment.
One reason could be his status as the Boy Who Lived. In the original story, Harry has this special aura about him, and in fanfiction, Hermione might be drawn to that in an obsessive way. Also, his bravery and leadership qualities could be factors that make Hermione overly interested in him.
One possible reason could be that Harry has different feelings towards someone else. Maybe he has developed deep emotional bonds with another male character in the fan fiction and his heart simply doesn't belong to Ginny. Another reason might be that he is still struggling with his own identity and is not ready for a traditional marriage, especially not to Ginny.
Maybe Harry has some new information about a greater threat that would also endanger Voldemort. So, he asks Voldemort to save him so that they can join forces against this new threat. Like a new dark entity from another dimension that is coming to destroy the wizarding world, and Harry figures Voldemort wouldn't want to lose his own power base.
It could be that Harry, through his kind heart, comes to understand Severus's complex past and motives. He realizes that Severus is not all bad and that there is a deeper connection between them. This new - found understanding and emotional bond drives Harry to save Severus from harm.
One reason could be the allure of power. Grindelwald was extremely powerful, and Harry, who has always been in the midst of power struggles, might be fascinated by that level of magical ability. Another reason could be a sense of curiosity. Harry has a thirst for knowledge, and Grindelwald's unique ideology about the wizarding world might intrigue him.
Well, one reason could be jealousy. Maybe his friends envy his fame or special abilities. Another could be misinformation. If they are fed false information about Harry, they might turn against him. For example, if someone convinces them that Harry is secretly working for the enemy.
It could also be that Harry himself is so traumatized by the war that he isolates himself. He might push people away, thinking that he's a danger to them. As he withdraws, others might misinterpret it as him not wanting their company and gradually abandon him.