Perhaps the collar is a cursed object that Hermione and Harry need to deal with. It could be causing strange behavior among the students. For instance, those who touch it start acting like animals. Hermione would use her extensive knowledge of magic to research a solution, while Harry would be more hands - on, trying to keep the affected students safe.
The plot could be that a mysterious collar is found in the Forbidden Forest. Hermione, being curious, examines it and accidentally activates it. The collar then starts to affect her magic in strange ways. Harry has to help her figure out how to remove it while also dealing with threats from dark forces who are interested in the collar's power.
Some fanfics use unique items like a collar to explore different aspects of the characters. In a story with Harry Potter and Hermione Granger, the collar could represent a form of restraint, either self - imposed or magically forced. This could lead to a plot where they have to break free from it, both literally and metaphorically, as they face challenges in the wizarding world.
A fanfic could also center around a mystery related to a collar found in Hogwarts that Hermione and Harry investigate together. They suspect it might be related to a secret society or an old magic. As they dig deeper, they discover that the collar has the power to unlock hidden passages in the castle, and they must use it to stop a dark force from awakening.
One possibility is that the truth potion gets misused. For example, an enemy of Harry and Hermione might get their hands on it and try to use it on them. But Hermione, being the brilliant witch she is, could find a way to turn the situation around. She might use her knowledge and quick thinking to make the enemy believe false information while under the influence of the potion. And this could be a crucial part in their fight against the dark forces.
In some fanfictions, Hermione might betray Harry due to a misunderstanding. For example, if there were false rumors spread about Harry being involved in dark magic or having a secret, evil plan. Hermione, being a stickler for the rules and the greater good in the original series, might be misled into believing these rumors and thus betray Harry.
She might be a maid at a magical inn. Hermione could encounter all sorts of strange wizards and witches as she cleans their rooms. She could stumble upon a mysterious object left behind by a guest and then begin a quest to figure out what it is and where it belongs, using her vast knowledge of magic.
A possible reason could be jealousy. Maybe Hermione becomes jealous of Harry's fame and the attention he always gets. She might feel overshadowed and decide to break away from him to find her own identity outside of his shadow.
One great 'Harry Potter Hermione Granger' fanfic is 'Harmony's Embrace'. It beautifully portrays their relationship development in a post - Hogwarts world. The story is filled with magical adventures and the deepening bond between Harry and Hermione.
One great fanfic that involves Harry Potter, Hermione Granger and has something to do with a harness could be 'The Enchanted Harness Adventure'. In this fanfic, Hermione discovers an ancient magical harness in the Forbidden Forest. It has the power to enhance the wearer's magical abilities. Harry and Hermione then go on a journey to figure out the true origin and purpose of the harness. It's full of mystery and adventure.
One idea could be that after a major battle, Hermione realizes that she and Harry have grown in different directions. She decides to break their friendship in order to pursue her own path of magical research. This could lead to a story where Harry initially feels betrayed but then comes to understand Hermione's decision as he too embarks on his own journey of self - discovery.