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.
Perhaps in the fanfiction, Harry's half - demon side gives him unique abilities like enhanced speed or the power to see in the dark. This could lead to him being sought after by both good and evil forces. He might have to decide which side to use his powers for, adding a moral dilemma to the story.
Perhaps the half - wolf demon has a special power that can help Harry Potter in his fight against Voldemort. For example, the demon can sense dark magic from a great distance. They meet in the Forbidden Forest and the demon offers his help to Harry in exchange for protection from the wizarding community's prejudice.
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 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.
A possible plot is that a group of evil ninjas are hunting half - demons, and Naruto is in their crosshairs. Sakura vows to protect Naruto at all costs. They go on the run together, and during this time, Sakura discovers that she has a special connection to Naruto's half - demon side. Maybe she has some long - lost family connection to the same demon race, which gives her unique abilities to help Naruto.
Well, a plot could be centered around the origin of Naruto's half - wolf demon form. Perhaps it was a result of an ancient curse placed on his family. He then has to embark on a journey to find a way to break the curse. Along the way, he meets other characters who either help or hinder him. His wolf - demon powers could also attract the attention of powerful enemies who want to use his powers for their own evil purposes.
A possible plot could involve the half - fae's struggle with their identity. They are neither fully fae nor fully wizard. At Hogwarts, they face discrimination from some students who are suspicious of their different abilities. Meanwhile, they discover that their fae side gives them access to an ancient magic that could potentially defeat Voldemort. But to master this magic, they have to go on a quest into the fae realm, where they encounter all sorts of challenges and make new allies and enemies.
Perhaps their half - human side makes them more attuned to nature magic. So they can draw power from natural elements like trees or rivers in a way that others can't. They could also be part of an ancient prophecy related to their half - human nature, which puts them in the center of a great adventure. And they might have to discover the secrets of their heritage on their own, as there is little knowledge about half - humans in the wizarding community.
One idea could be exploring how Naruto's half - demon fox nature affects his relationships differently. For example, some friends might be more fearful or in awe of his power. Another could be a story where Naruto has to go on a journey to fully understand and control his half - demon fox side without the help of his usual mentors, relying only on his own instincts and new, unexpected allies he meets along the way.
One plot idea could be Naruto's struggle to balance the angelic and demonic natures within him. For example, the angelic side might push him towards peace and mercy, while the demonic side could fuel his power in battles but also lead to more aggressive tendencies. He could be constantly at war with himself, trying to decide which side to listen to in different situations.
One idea could be that Harry, as a demon, has to navigate the wizarding world while hiding his true nature from his friends. He might struggle with newfound powers and the urge to use them in ways that are against the wizarding code. Another plot could involve Harry being sent on a quest by the demon world to retrieve a powerful magical artifact from Hogwarts, creating a conflict between his loyalty to the wizarding world and his new demonic obligations.