There are various plot ideas. Some fanfictions might explore the idea that the heir of Slytherin is not a single individual but a group of people who have been secretly working to change the reputation of Slytherin house. They could be working against dark wizards within the house who are trying to revive the old ways of pure - blood elitism. Or perhaps the heir has a connection to an ancient magic that is tied to Hogwarts itself, and in order to save the school from a new danger, they must unlock this magic. It could also be a story where the heir is in a love triangle with a Gryffindor and a Hufflepuff, adding a romantic element to the plot while still dealing with the challenges of being the heir of Slytherin.
One interesting plotline could be the exploration of the true identity of the Heir of Slytherin. Maybe it's not who everyone suspects. For example, it could be a character who has been hiding their Slytherin heritage all along.
One great 'Harry Potter Slytherin heir' fanfiction is 'The Heir of Slytherin's Redemption'. It shows the Slytherin heir in a new light, exploring their journey to break free from the dark expectations. Another one could be 'Slytherin's Hidden Heir'. It delves into the mystery of a previously unknown heir with a lot of plot twists. There's also 'The True Slytherin Heir' which focuses on how the heir discovers their true identity and purpose within the wizarding world.
One idea could be that the male OC heir discovers an ancient spell book hidden in the Slytherin common room that holds the key to a long - lost power. Another could be his struggle to deal with the expectations of being an heir while also trying to form genuine friendships outside of his house. Maybe he has to face off against a dark wizard who wants to use him for his Slytherin heritage.
One possible plot development could be that Harry has to face a lot more internal conflict. He would be associated with a house that his friends might view with suspicion. Also, he might discover new magical abilities or powers that are related to the Slytherin heritage.
One idea could be that the heir of Sauron somehow infiltrates Hogwarts under a false identity. He tries to use the chaos of the wizarding world to his advantage to gather power. Another could be that there is a prophecy that links the heir of Sauron with Harry Potter, and they must either fight or unite depending on how the story unfolds. Or perhaps the heir of Sauron is actually a long - lost relative of one of the Hogwarts professors, which adds a layer of mystery and conflict.
One idea could be that the heir discovers a long - lost spell created by one of the founders. For example, a spell that can heal any injury instantly. Another could be that the heir has the ability to communicate with the spirits of the founders for guidance in times of great danger. Maybe they get visions from the founders about how to defeat a new dark wizard that is emerging.
Well, a cool plot in 'Harry Potter Hogwarts Heir Fanfiction' could be that the heir is actually a character we least expect, like a Muggle - born. This would challenge the traditional ideas about pure - blood and half - blood supremacy in the wizarding world. They could use their unique perspective as an heir to bring about changes in Hogwarts' curriculum and social structure. For example, they might introduce new forms of magic that are more inclusive of different backgrounds.
In this fanfiction, a really interesting plot could be that the heir of Dracula is actually a long - lost relative of one of the main characters. This discovery could stir up a whole lot of emotions and politics within the wizarding families. Also, the heir might bring in new forms of magic that are related to their vampiric heritage. For instance, the ability to transform into a bat - like creature at will, which could be used for both good and bad depending on the situation. This would create a whole new dynamic in the battles and relationships within the story.
One interesting plot idea could be exploring how Harry discovers he is the heir of Peverell in a more secretive and dangerous way. Maybe he has to decipher ancient Peverell family codes hidden in Hogwarts that lead him to his true heritage.
Yes, in certain fanfiction. This concept allows for a really interesting exploration of the Harry Potter universe. By making Harry the true heir of Slytherin, it can add a whole new layer of complexity to his character. He could inherit Slytherin - like traits such as cunning and ambition, which would contrast with his Gryffindor - associated qualities like bravery, leading to some great internal and external conflicts in the story.