In the fanfiction, Percy's demon heritage could make him an outcast even among the demigods. Some might fear him, and others might try to use him for their own purposes. He would then have to prove himself not only to his friends but also to the entire demigod community that he's not a threat, all while coming to terms with his own unique identity.
One idea could be that Percy has to struggle with the dark urges that come with his demon half. For example, he might be tempted to use his newfound, more sinister powers in battle, but he has to resist to stay true to his friends and his own moral code.
In Percy Jackson half - monster fanfiction, a possible plot could be that a half - monster has the power to see the future. However, the visions are often unclear and cause a great deal of confusion. They join a group of demigods on a quest, and their visions are crucial to the success of the mission, but they also have to deal with the fact that some of the demigods think their power is a sign of evil. Another idea is a half - monster who is half - centaur and half - something else. They are incredibly fast and strong, but their centaur side makes them a target for some hunters who believe centaurs are wild and should be tamed. So, they go on a journey to prove that they are not just a wild creature but a sentient being with their own will. Also, a half - monster with the power to manipulate dreams could be a great plot. They accidentally get caught up in a nightmare that is spreading among the demigods and must use their power to stop it before it consumes everyone.
One idea could be that Percy has to hide his Titan heritage from the other demigods at Camp Half - Blood. He discovers new powers related to his Titan side that are different from his godly powers. For example, he might have the ability to control certain aspects of nature in a more primal way compared to his Poseidon - related powers.
One idea could be a story about Percy's sister who was hidden away and discovers her true identity when she arrives at Camp Half - Blood. Another could be a time - travel fanfic where Percy goes back to the early days of the camp and has to deal with different versions of the gods. Or perhaps a story where Percy and his friends have to face a new, unknown monster that is immune to water, which really challenges Percy's powers.
One idea could be exploring Percy's life after the main events. Maybe he has to face a new threat that is related to an ancient prophecy that was overlooked. He could go on a journey with his old friends, like Annabeth, to discover the truth behind it.
Well, a great plot for a Percy Jackson Camp Half - Blood fanfic could be a time - travel story. Imagine some of the demigods being sent back in time to the era when the gods first created Camp Half - Blood. They could witness the founding events and also face the challenges that the first demigods had to endure. Or perhaps a story where the camp is invaded by a group of demigods from another pantheon, like the Norse demigods. This would lead to a lot of clashes and also potential alliances as they try to figure out who has the right to be at Camp Half - Blood. Also, a plot where a demigod discovers they have a connection to a long - lost prophecy that could change the fate of the camp forever.
One idea could be Percy having to form an uneasy alliance with the Demon King to stop a greater threat that endangers both the demigod and demon worlds. Maybe a powerful ancient evil is rising and they have no choice but to work together, despite their initial distrust.
One plot idea could be Percy having to team up with Hera to rescue a group of demigods who have been captured by an ancient monster. Hera, despite her usual aloofness, realizes she needs Percy's unique skills.
Maybe there's an ancient prophecy in the 'naruto half demon half god fanfiction' world that Naruto is the key to saving the world because of his half - demon half - god heritage. But he first has to unlock all of his powers. This would lead to a journey of self - discovery, where he meets different characters who help or hinder his progress. Along the way, he could also learn about the origin of his unique nature and how it came to be.
One idea could be that Harry struggles to control his demonic powers. For example, he might accidentally set things on fire when he gets angry. Another could be that he has to hide his half - demon nature from his friends at Hogwarts, constantly fearing discovery.
One idea could be Percy and his friends getting trapped in a virtual game world that's a twisted version of their own. They have to use their demigod skills to defeat the digital monsters and find a way out.