One idea could be that Harry discovers he has some long - lost royal bloodline and as a 'prince' in the wizarding world, he has to learn the ways of courtly magic. He might be given special tasks or responsibilities related to protecting ancient magical artifacts that are only entrusted to those of royal magical blood.
Maybe Harry, as a prince, is betrothed to a princess from another magical realm. This could lead to a whole series of adventures as he tries to understand and get along with his future bride while also dealing with the political intrigue between the two magical lands. For example, there could be a group that doesn't want the union to happen and they try to sabotage it, and Harry has to use his skills and newfound status to stop them.
One possible plot idea could be the Dark Prince having a hidden agenda that not even Voldemort is fully aware of. He might be secretly manipulating events to gain ultimate power for himself. For example, he could be using the chaos of the wizarding war to his advantage by making deals with both sides without their knowledge.
Well, a plot could be centered around Eileen Prince's family secrets. Suppose there were some hidden prophecies or family legacies that she was aware of. In the fanfiction, Harry could accidentally stumble upon these secrets while researching Snape's past. This could lead to a whole new adventure where Harry has to deal with both the revelations about Eileen and the implications for the wizarding world at large.
Perhaps the Demon Prince is actually a long - lost relative of one of the main characters in Harry Potter. This could lead to a complex web of relationships and power struggles within the wizarding world. For example, he might be trying to claim a rightful place in Hogwarts or in the wizarding hierarchy, which would put him at odds with many established characters.
One idea could be the Fae Prince having a secret alliance with Hogwarts against a common dark magic threat. This would bring a whole new dynamic to the wizarding world of Harry Potter.
Another idea is to have a fanfiction that shows the perspective of the other students in Hogwarts during the first two books regarding Snape and the rumors about the Half - Blood Prince. It could explore how the students' opinions of Snape are shaped by the little bits of information they get about the Prince, and how this affects their overall view of Snape as a teacher and a figure in the wizarding world. This would give a more in - depth look at the Hogwarts community during those early years.
One plot idea could be that Fem Harry Potter somehow gets transported to the world of Narnia during the time of Prince Caspian. She could use her magic skills, learned from Hogwarts, to help Caspian in his battles. For example, she might use spells like Protego to shield his army from enemy attacks.
In a Harry Potter and Daedric Prince fanfiction, it could be that the Daedric Princes are aware of the prophecy about Harry Potter. They see an opportunity to either help or hinder Voldemort's rise to power based on their own motives. For example, a Daedric Prince might want to keep the balance of power in the wizarding world and decides to secretly protect Harry. On the other hand, another Prince could side with Voldemort in hopes of getting a share of the power he would gain if he conquered the wizarding world. There could also be a situation where a Daedric Prince's magic has an unexpected effect on the magic in the Harry Potter universe, like changing the properties of potions or the way spells work.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
One interesting plot idea could be exploring what would happen if Harry had a different upbringing, like being raised by the Malfoys. It would completely change his view of the wizarding world and his relationships. Another idea might be a time - travel fanfic where Harry goes back to the Marauders' era and interacts with his parents and their friends. This could lead to him preventing certain tragedies or changing the future in unexpected ways. And then there's the concept of a fanfic where the roles are reversed, and Voldemort is the one trying to protect the wizarding world from a greater evil, with Harry being the main antagonist.
A traveler could be from a different magical realm entirely and come to the Harry Potter universe. They bring with them unique magical abilities that both fascinate and frighten the wizards in the Harry Potter world. This could lead to a series of adventures where they either share their knowledge or are hunted down by those who fear the new magic they possess.