I would recommend 'The Twin Beyond Memory'. In this story, the forgotten twin has amnesia and doesn't remember their true identity. They grow up in a muggle orphanage until their magic starts to show. Eventually, they find their way to Hogwarts. The unique part is that their amnesia is caused by a powerful dark magic spell. As Harry and Hermione try to help their twin regain their memories, they uncover a conspiracy within the wizarding world that dates back to their parents' time.
There's a fanfiction where Harry's twin has the ability to communicate with magical creatures in a way that no one else can. This twin forms an alliance with the centaurs and the house - elves, using their knowledge and power to help Harry in his battles. It's unique because it focuses on the relationship between different magical species and how the twin's special gift can change the course of events in the wizarding world.
Sure. 'The Unseen Horcrux' is a great one. In it, Harry and Hermione find a Horcrux that is not like the others. It has the ability to manipulate time. This creates a whole new set of challenges as they try to figure out how to destroy it without causing chaos in the timeline. It's a really cool take on the Horcrux concept.
There's a fanfic where the forgotten twin is raised in a different part of the wizarding world. As the story unfolds, they end up at Hogwarts and there are a lot of secrets and mysteries surrounding their identity. It's really interesting to see how they interact with Harry and Hermione, especially when old family secrets start to surface.
Sure. 'The Coldest Adventure' is a great one. In this fanfiction, they are on a mission in a freezing, uncharted territory. What makes it unique is that they start to develop a special bond that is different from their normal friendship, and this bond is somehow related to the extreme cold they are in. It's a really interesting read.
There's 'Meeting Before Hogwarts'. In this fanfiction, Harry and Hermione meet before Hogwarts in a small wizarding village. Hermione is on a quest to find a rare magical book, and Harry gets caught up in her search. Their relationship starts off as a partnership in this adventure, and as they head to Hogwarts, they already have a strong bond. This unique start to their relationship makes for an engaging read with a plot that stands out.
Sure. 'Twisted Jealousy' is a great one. In this fanfic, it turns out that the jealousy is being magically influenced by a dark charm placed on them. The way they figure it out and deal with it is really unique.
A fanfiction that has a unique plot twist is one where Ron and Hermione accidentally switch bodies. This leads to all sorts of comical and also deep - thinking situations as they have to understand each other's perspectives in a very literal way. They also have to keep it a secret from Harry and the others at Hogwarts.
There's 'Hermione and Seth: The Cursed Imprint'. In this one, the imprinting is not as straightforward as it seems. It's cursed by an ancient dark magic. The story follows their journey to break the curse while still maintaining their connection. It has a lot of mystery and suspense, which makes it quite different from other fanfictions in this category.
A unique Ron and Hermione scars fanfiction is one where their scars are actually a part of a prophecy. The plot could revolve around them having to fulfill a certain task because of their scars, and the story unfolds as they discover what this task is and how it will change their lives and relationship.
I would recommend 'Mysterious Alliances'. In this fanfiction, Lucius and Hermione form an alliance to solve a mystery that threatens the wizarding world. Their relationship starts off as a practical one but gradually turns into something more. The plot is full of twists and turns that keep you on the edge of your seat.