Well, in some fanfictions of 'In this world and the next', there could be a plotline where Harry Potter himself travels to the 'next world' while still alive. He might meet the spirits of his parents and other important figures in the wizarding world who give him new powers or knowledge. This could change the course of his battle against Voldemort in the original world.
One interesting plotline could be about the characters exploring magical realms that are hidden between this world and the next. For example, they might discover ancient spells or magical creatures that were thought to be extinct. Another could involve the spirits of dead wizards guiding the living through difficult times, adding a new layer of mystery and magic to the story.
A great plotline could be that the boundaries between this world and the next start to break down due to some dark magic. As a result, the characters have to deal with things like ghosts roaming freely in the living world and causing chaos. Meanwhile, they also have to find a way to stop this from happening before it's too late, which involves a lot of research into old magic and forgotten lore.
Perhaps a plotline where the magic in the 'next world' has different rules. The characters from the original Harry Potter world have to adapt to these new magical laws. This could lead to some really unique and exciting magical duels and problem - solving situations.
In some fanfictions, the time travel might lead to preventing a certain tragedy that had occurred in the past. For example, they could stop the death of a beloved character, which would then have a ripple effect on the future they come from. This could create a whole new world order in the 'next gen' timeline.
One interesting plotline could be the protagonist using their modern - day knowledge to introduce new magic concepts in the wizarding world. For example, they might find a way to combine Muggle technology with magic in a unique way.
Perhaps Naruto befriends Harry Potter and they exchange their skills. Naruto could teach Harry some of his chakra control techniques, and Harry could show Naruto how to use a wand properly. This interaction could lead to new adventures and ways to fight against the dark forces in the Harry Potter world.
One interesting plotline could be about the Founders' initial meetings and how they decided to build Hogwarts. Maybe they had different ideas at first but then came to a consensus on the school's values and layout.
Well, perhaps in this fanfiction, the Phoenix plays a role in revealing hidden secrets about Harry's family. It could lead Harry to discover an ancient magic that was long forgotten by the wizarding world, which was somehow related to his family. This could then set him on a new quest, different from the one in the original books, and change the course of the story completely.
A common plotline is the characters' post - graduation plans. Some fanfictions might explore how Harry, Hermione, and Ron decide on their career paths. Maybe Harry is conflicted between becoming an Auror or a teacher at Hogwarts. Hermione could be considering further studies in ancient magic, and Ron might be thinking about joining his brothers in the joke shop business. This exploration of their future dreams and how they support each other during this transition period can be really engaging.
A possible plotline could be a time - travel fanfiction where Harry and his friends accidentally travel back in time to the era when the founders of Hogwarts were alive. They get to interact with the founders, learn about the early days of Hogwarts, and face challenges that come with changing the past or ensuring that history unfolds as it should. This would involve dealing with the different magical cultures and practices of that time, as well as the complex personalities of the founders.
One interesting plotline could be the brothers having a secret mission within Hogwarts that the original books didn't cover. For example, they might be on a quest to find a hidden magical artifact that has been lost for centuries. Another could be their relationship dynamic affecting the course of major events in the wizarding world, like how they interact with Harry and his friends during the Triwizard Tournament.
One interesting plotline could be the exploration of the demiwizard's unique powers and how they interact with the existing wizarding world in 'harry potter the demiwizard fanfiction'. For example, perhaps their powers are a blend of wizard and some other magical or non - magical entity, leading to new forms of magic or ways of solving problems.