One possible plot could be that Harry is experimented on by dark wizards who are trying to create a new form of dark magic. They might use his unique magical abilities as a base for their experiments. Another could be that well - meaning but misguided witches and wizards experiment on Harry to find a cure for a deadly magical disease, thinking his famous resilience could hold the key. Or perhaps some alien - like magical creatures capture Harry and experiment on him to understand the human - wizard form better.
A plot might involve Harry being experimented on in an attempt to transfer his powers to others. Some power - hungry wizards might think that if they can extract and distribute his powers, they can become as powerful as he is. Or perhaps a group of experimental magicians are trying to find a way to make Harry immune to all forms of dark magic through their experiments. This could involve exposing him to different levels of dark magic and then trying to counteract it with new spells.
Well, in such a fanfic, a plotline might involve Naruto's friends trying to rescue him. They could discover Orochimaru's lair where Naruto is being experimented on. Meanwhile, Naruto himself could be developing new and unexpected powers as a result of the experiments, which he then has to learn to control. And there could be a race against time for Naruto's friends to reach him before Orochimaru's experiments cause irreversible damage.
One possible plot could be that after Cedric survives the Triwizard Tournament, he and Harry grow closer over time. They start to bond over shared experiences at Hogwarts, like their mutual dislike for Umbridge. Their friendship gradually turns into love, and they decide to get married in a small, private ceremony with their closest friends and family from the wizarding world.
One possible plot could be that there is a powerful dark wizard who forces Harry into marriage as part of a grand scheme to gain control over the wizarding world. Maybe this wizard has some ancient magic that compels Harry and he has to find a way to break free while also dealing with the political and social ramifications of this forced union within the wizarding community.
One possible plot could be that Harry is captured by Voldemort and his friends have to mount a dangerous rescue mission. They might have to infiltrate Voldemort's stronghold, which could be filled with dark magic defenses.
Maybe in the fanfic, Harry discovers a magical spell that can temporarily transform him into a girl. This leads to a series of adventures as he experiences life from a female perspective. He could face challenges like dealing with different social expectations for girls in the wizarding world, such as how girls are treated in Hogwarts classes or social events. It could also involve him making new friends who help him understand and embrace this new side of himself.
One possible plot could be that Lily is under some dark magic influence which makes her turn against Harry. Maybe a powerful dark wizard has corrupted her mind, leading her to believe that Harry is a threat to the wizarding world that needs to be eliminated.
One possible plot could be that the main character is a struggling musician and Harry Styles discovers their talent. He then helps them break into the music industry, and during this process, they develop a strong bond. It could be a story of mentorship and mutual inspiration.
Greyback might be trying to turn Harry into a werewolf. Since Harry is a very powerful wizard, if Greyback could succeed, it would create a werewolf with extraordinary magical abilities. This would be a very dark and dangerous plotline for a fanfic.
One possible plot could be Harry using his magical skills for diplomatic relations within the wizarding government. He might be sent on missions to other magical countries to negotiate treaties or resolve disputes.
Perhaps the fanfic could revolve around Harry Styles using 'camouflage' in a more metaphorical sense. For example, he could be trying to hide his insecurities or past traumas from the public eye. And as the story progresses, someone special might come into his life and gradually help him shed that 'camouflage' and face his real self.