Another concept could be how the spirit of vengeance affects relationships. It might cause rifts between friends or family members. For instance, if one character is consumed by vengeance and the others try to stop them, it can create a lot of tension. This can be explored in a fanfiction to show the complex nature of human emotions in the context of the Harry Potter universe.
One interesting concept could be the idea of a character seeking vengeance for a wrong done to them within the magical world of Harry Potter. For example, a character whose family was killed by Death Eaters might take on a spirit of vengeance. This could lead to them going against the normal rules and ethics of the wizarding world in their pursuit of justice.
In some 'Harry Potter Spirit of Vengeance' fanfictions, the spirit of vengeance might be embodied as an actual entity. It could be a dark force that tempts characters, like a siren song. A character might struggle with this entity, trying to decide whether to give in to their vengeful feelings or rise above them and follow the path of good like Harry Potter often did.
One interesting concept could be exploring the spirits of the founders of Hogwarts. For example, how their spirits might interact with modern students or influence the current state of the school. Another could be delving into the spirits of magical creatures and how they view the wizarding world from their ethereal perspective.
Another concept is that the wand spirit can influence the wizard's magic in unique ways. It might enhance certain spells based on the wand spirit's own nature. Like if the wand spirit has a fiery nature, it could make fire - based spells more powerful and also add a special 'flavor' to them, such as a different color or intensity.
One interesting 'Harry Potter Vengeance Fanfiction' could be where Harry discovers a long - hidden plot against his parents and sets out for a very personal vengeance against those involved. He might use his skills and the knowledge he has gained over the years to outwit his enemies in a more ruthless way than in the original books.
Perhaps in some fanfictions, Harry seeks vengeance for the loss of his loved ones. He could start by targeting those who directly or indirectly caused their deaths. For example, if he discovers that certain Ministry officials were corrupt and enabled Voldemort's rise, he would take action against them. He might use his status as the Boy Who Lived to expose their wrongdoings and bring them to justice in his own way, which could involve some form of magical retribution.
One interesting plot could be the angel of vengeance being a long - lost magical being that has a connection to Harry's family. It might come to Hogwarts to right some ancient wrongs that have been plaguing the wizarding world for centuries.
One interesting concept could be exploring more about the Marauders' time at Hogwarts. Fanfiction might expand on their adventures, like pranks they played that were never mentioned in the original book. Another could be different interpretations of Sirius Black's escape and his relationship with Harry during that time.
Some fanfictions in Harry Potter 2 might play with the idea of the basilisk having different powers or weaknesses. It could also explore the idea of a hidden connection between Ginny and the Chamber of Secrets that goes beyond what was in the original story. There might be fanfictions that change the role of certain characters, like making Neville a more central figure in solving the mystery of the Chamber.
Luna Lovegood might also be an interesting choice. Imagine if something really bad happened to her father or her friends in a fanfiction. Luna, who is often seen as a bit of an outsider but also very strong - willed, could be driven by a spirit of vengeance. She might use her unique perspective and knowledge of the wizarding world's oddities to seek retribution in a very Luna - like way.
One interesting concept could be exploring new magical creatures in the Harry Potter kingdom. Maybe there are some hidden species that haven't been discovered in the original series. Another could be alternative forms of magic that are unique to the fanfiction's version of the kingdom. And also, new relationships between different houses or characters can be quite fascinating.
One interesting concept could be the use of magic in relation to physical laws. For example, how spells might interact with gravity. Maybe a levitation spell actually counteracts the force of gravity in a way that can be explained through some made - up 'physics' in the fanfiction.