A plot could revolve around Viktor inviting Hermione to visit his home country to learn about a different kind of magic. Along the way, they face various cultural misunderstandings and challenges together, which strengthen their bond. For example, they might encounter a local magical creature that only they can figure out how to deal with. And through this adventure, their relationship blossoms.
One idea could be a story where Hermione and Viktor meet again years after the Triwizard Tournament. Maybe Viktor has come to Hogwarts as a guest lecturer and he and Hermione rekindle their friendship, which then develops into a deeper relationship as they work together on a research project about magical creatures that are native to both Bulgaria and Britain.
One idea could be that they face challenges from their different magical cultures. For example, Hermione's friends from Hogwarts might be initially skeptical of Viktor due to his Durmstrang background. Another could be that they discover new magic related to pregnancy that has been long forgotten. Maybe they find a spell that can communicate with the unborn child's magic even before it's born.
One idea could be that Viktor Krum, still having feelings for Hermione, comes back to Hogwarts for a Quidditch event. Harry notices his lingering glances at Hermione. This causes some tension between Harry and Krum as Harry is very protective of his friend. Meanwhile, Hermione is caught in the middle, trying to focus on her studies but also dealing with the unspoken emotions.
A possible plot is that a spell gone wrong makes Queen's music the only thing that can calm a dangerous magical creature. Hermione, being the clever witch she is, uses her love for Queen to figure out how to tame the creature and in the process, she also uncovers a long - lost magical connection between Queen's music and ancient wizarding magic.
One idea could be a time - travel plot where Hermione goes back in time and teams up with a young Dumbledore to solve a mystery that has implications for the future of Hogwarts. Another could be a story where Dumbledore entrusts Hermione with a special mission that no one else in the wizarding world can handle due to her unique skills and knowledge. Maybe a plot where Hermione discovers a long - lost spell in the Hogwarts library that was created by Dumbledore in his youth, and she has to figure out how to use it to save the school from a new dark threat.
A plot could be about a new student who arrives at Hogwarts just as Hermione is petrified. This new student has some special knowledge or ability related to the petrification curse. They team up with Harry and Ron to figure out how to save Hermione and also discover that the new student has a connection to the one who cast the spell in the first place. Maybe they find out that the new student's family has a feud with the heir of Slytherin.
One plot idea could be Hermione facing discrimination within the wizarding world not just for being a Muggle - born but also for being a person of color. She could use her intelligence to fight against this double - edged prejudice and work towards changing the views of the wizarding society. Another idea is that Hermione discovers a part of her family's non - white magical heritage that has been hidden. This could lead to a journey of self - discovery as she explores this new aspect of her identity while still dealing with the challenges of Hogwarts life.
One idea could be that the Sorting Hat has a vision about Hermione's future during her sorting. It could foresee her becoming a great leader in the wizarding world and gives her some special advice. Another could be that the Sorting Hat gets magically malfunctioned and tries to sort Hermione into different houses throughout her first year, causing all kinds of chaos and self - discovery for her.
One idea could be that Hermione is switched with a pure - blood witch from a dark family. She then has to navigate the different values and expectations of this new family while still holding onto her own intelligence and thirst for knowledge. For example, she might be expected to participate in dark magic studies, but she uses her wits to find a way around it and secretly study light magic instead.
They could start a magical school of their own. As a married couple, they would pool their resources and knowledge. Hermione's love for learning and Harry's practical experience would make for a great curriculum. They would face opposition from the traditional wizarding schools at first, but eventually prove that their new way of teaching magic is beneficial for young wizards and witches.