Another plot could involve Voldemort using Harry's torture as a way to draw out Dumbledore or other powerful wizards. Harry endures the torture bravely, and in the process, he discovers new powers or abilities within himself that he didn't know he had. This newfound strength helps him either resist Voldemort's torture more effectively or eventually escape.
One possible plotline could be Harry being held captive in one of Voldemort's dark lairs. Voldemort might use the Cruciatus Curse on him repeatedly to try and break his spirit or get information about the Order of the Phoenix. Harry could be isolated and tortured while his friends desperately search for him.
Perhaps Harry is held captive in a hidden location by Voldemort. While being tortured, he has visions of his past and the sacrifices his parents made. This gives him the strength to resist Voldemort's attempts to break his will. His friends then embark on a dangerous quest to find him based on these visions Harry manages to send out magically.
In some versions of this fanfic concept, Harry might surrender as part of a long - term strategy. He could be faking it to get closer to Voldemort and find a way to destroy him from the inside. He might endure a lot of hardships and mental torture while pretending to be a submissive prisoner, all the while looking for that one weak spot in Voldemort's defenses that he can exploit to end the Dark Lord once and for all.
A possible plotline could be that Voldemort has a change of heart. Maybe he realizes that Harry has some power or knowledge that he needs, so he decides to carry Harry away to a secret location to extract that information from him.
In this fanfic, it might be that Fleur has been wrongly accused of a crime by a powerful magical authority. Harry tries to defend her but is captured instead. The authority tortures Harry to force him to give up on Fleur. However, Harry refuses. He endures the physical and mental pain of the torture. His perseverance might inspire some of the other characters to see the truth. Eventually, they join forces with Harry and they manage to expose the real culprit and save Fleur.
One possible plotline could be that Harry realizes the wizarding world has some deep - seated flaws that Voldemort also wants to change. So, they form an alliance to reform the Ministry of Magic. For example, they might work together to end the pure - blood supremacy that has long plagued the wizarding society.
Well, perhaps in the fanfic, Orochimaru tortures Naruto as a form of revenge against the Leaf Village. He might use his various snake - related jutsu to cause pain and harm to Naruto. For example, he could make snakes constrict Naruto, slowly squeezing the life out of him while also injecting him with some sort of venom that causes excruciating pain. And all this while, Naruto is trying to find a way to break free and defeat Orochimaru, relying on his inner strength and the memories of his friends and his training.
One possible plotline could be that Voldemort realizes that Harry is the key to some greater power or knowledge that he wants to obtain. So, instead of killing Harry, he saves him from another dark wizard or a dangerous magical creature. Maybe he sees that Harry has a connection to an ancient magic that could help him rule the wizarding world in a more complete way.
One possible plotline could be that Harry discovers some sort of ancient magic or prophecy that binds him to Voldemort in a way that is not initially understood as a mate - like relationship. As they interact more, they start to see different sides of each other. Harry might try to change Voldemort, and Voldemort might find himself having unexpected feelings for Harry. Another plotline could involve a magical accident that fuses their magic in a way that creates this bond. Then they have to navigate their new relationship while dealing with the wizarding world's reactions.
One possible plotline could be that Harry is tricked by Voldemort. Voldemort might use some powerful dark magic or false promises to make Harry believe that joining him is the right thing to do. For example, Voldemort could claim to have a way to end all the bloodshed in the wizarding world if Harry helps him.
Perhaps Voldemort discovers a long - lost family secret of Harry's that gives him leverage. For example, he might find out that there is a curse on Harry's family that only he can break, but only if Harry joins him. Or Voldemort could be using some form of mind - control device that was created by an ancient dark wizard, which he uses on Harry to make him a part of his ranks.