One common theme is the fish - out - of - water experience. Fem Harry is used to Hogwarts, so going to Durmstrang is a big change. Another theme is the exploration of different magical cultures. Durmstrang has its own set of traditions and ways of teaching magic that are different from Hogwarts.
There could be some original characters created by the fanfiction authors. These could be Harry's new classmates or friends at Durmstrang. They might have their own unique magical skills and personalities, and through their interactions with Harry, they can help develop the story further. For example, a new friend could introduce Harry to a secret part of the Durmstrang grounds or a special magical technique that's unique to the school.
One common theme is the culture shock. Harry coming from Hogwarts to Durmstrang would experience a very different magical education system. Another theme could be the relationships he forms with new classmates. They might be more competitive or have different loyalties.
One possible plotline could be Harry making new friends at Durmstrang. He might meet students with different magical abilities and cultures compared to Hogwarts. Another could be Harry facing new challenges in the Durmstrang curriculum, which might be more combat - oriented or have different magical theories.
Well, one possibility is that Harry could face new magical challenges there. Durmstrang is known for its different approach to magic compared to Hogwarts. Maybe he'll learn some unique spells or face dark magic threats that are more common in Durmstrang's curriculum.
One common theme is the exploration of the Dark Arts. Since Durmstrang has a more lenient attitude towards it compared to Hogwarts, fanfics often show Harry dealing with the allure and danger of these forbidden magics. Another theme is isolation. Harry may feel alone in this new and different environment, surrounded by students who have been brought up with different values.
Well, one possible plot could be that Harry goes to Durmstrang to learn different kinds of magic not taught at Hogwarts. Maybe he discovers a new form of defensive magic there. He could also make new friends who have different views on magic compared to his Hogwarts pals. And perhaps he gets involved in a mystery that is unique to Durmstrang, like an ancient curse on the school or a hidden artifact.
Obviously, Harry Potter himself. There would also likely be Viktor Krum, who is from Durmstrang. Krum could be either a friend or a rival to Harry. Igor Karkaroff, the headmaster of Durmstrang, would be another important character. And there could be new students created for the fanfic, like a Durmstrang student who becomes Harry's guide in the new school.
There could be a dark entity that lurks within the Durmstrang castle itself. It might have been awakened by Harry's arrival or has some connection to the school's past. This entity could manipulate students and teachers alike to create chaos and oppose Harry.
One possible plot could be Hermione being selected for an exchange program to Durmstrang. There, she might face challenges in adjusting to their different teaching methods which are more focused on the Dark Arts in a controlled way compared to Hogwarts. She could also encounter new friendships and rivalries. For example, she might become friends with some students who are secretly opposed to the more extreme elements in Durmstrang's curriculum.
There's also 'Fem Harry at Durmstrang: A New Beginning'. In this fanfic, Fem Harry is initially an outcast but slowly forms her own group of friends. It delves deep into the magical curriculum at Durmstrang which is quite different from Hogwarts. She has to learn new spells and deal with the stricter discipline there.