Perhaps in this fanfic, Dumbledore steals something from Harry like a powerful magical heirloom. It could be that he wants to keep it away from Voldemort and believes Harry is not yet ready to handle its power. He might be overstepping his bounds, thinking he knows best as he often does in the original series, but this time it's through stealing.
In the 'Dumbledore steals from Harry fanfic', it could be that Dumbledore steals Harry's memories. He might think that some of Harry's memories are too painful or that they hold secrets that could be used against Harry. However, Harry would then be left confused and betrayed, and this could lead to a big conflict between them as Harry tries to figure out what Dumbledore has done and why.
Well, it could be that Dumbledore steals Harry's Invisibility Cloak for some 'greater good' he believes in. Maybe he thinks it's too dangerous for Harry to have at a certain point in time.
One possible reason could be that Dumbledore believes he is acting in Harry's greater good. Maybe he thinks that by taking certain items from Harry, he can protect them from falling into the wrong hands. For example, if Harry has a powerful magical artifact that Voldemort desires, Dumbledore might steal it to keep it safe.
One possible plot development could be that Dumbledore gives Snape to Harry as a sort of guide in the wizarding world. Snape, with all his knowledge and experience, could show Harry things that Dumbledore couldn't. This might include some dark arts knowledge that could be used against Voldemort. It could also be a test for both of them. For Snape, to see if he can truly be selfless in helping Harry, and for Harry, to learn to trust Snape despite their past differences.
There would also be fans who are simply curious. They might want to read the fanfic just to see how the author justifies Dumbledore's actions. Whether it's because of some dark prophecy or a misunderstanding, they would be interested in seeing how the story unfolds and if the author can make this rather controversial concept seem plausible within the magical world of Harry Potter.
It could be that Harry finds out about Dumbledore's secrets regarding the Deathly Hallows. If Harry thinks Dumbledore was more interested in the Hallows for his own purposes rather than for the greater good, it might make him hate Dumbledore.
One possible plot could be that Harry discovers a powerful and ancient magic that Dumbledore has been trying to keep hidden. Harry's newfound knowledge and power make Dumbledore fear that he will disrupt the delicate balance in the wizarding world. So, Dumbledore starts to act nervously around Harry and tries to subtly keep him in check.
One possible plot could be that Harry discovers some dark secret about Dumbledore's past actions and decides to oppose him. For example, if he finds out that Dumbledore had some sort of deal with the Dark Arts that he hid from everyone. This would make Harry feel betrayed and drive him to defy Dumbledore.
Well, perhaps Harry discovers some dark secret about Dumbledore that makes him feel he must escape. It could be that Dumbledore is being controlled by some dark magic and Harry realizes he's in danger around him.
Maybe Harry steals wands to gain more power in the wizarding world. He could be on a secret mission to collect powerful wands that are hidden away. By stealing these wands, he might be trying to tip the balance of power in his favor against some dark forces.
Maybe Harry Potter steals a ship to escape from some dark wizards who are chasing him. He uses his magic skills to sail the ship stealthily and heads towards a hidden island where he hopes to find a powerful magical artifact to defeat the dark forces.
One possible reason could be that Harry has discovered something about himself or his past that he thinks Dumbledore might not approve of or might try to stop him from exploring further. For example, if he found out some dark magic connection in his family history that he wants to understand on his own without Dumbledore interfering.