Some fan fictions might take a darker turn and explore what would happen if a powerful dark force overtook the Institute. This could lead to a situation where the main characters have to make difficult choices between their loyalty to the Shadowhunter laws and their own moral compasses, making for a very engaging read.
There might be a 'dark artifices fanfiction' where a group of young shadowhunters in training discovers an ancient and powerful dark artifice that was long forgotten. They struggle with whether to use it for good or if it will corrupt them. This creates a lot of internal conflict among the characters and leads to an exciting plot full of twists and turns. It can also show how they grow as characters throughout the story.
One idea could be exploring the backstories of the minor characters in more detail. For example, the life of a downworlder who has interacted with the main characters but whose story is not fully told in the original. Another could be a 'what if' scenario, like what if a certain character made a different choice during a crucial moment in the story. This could lead to a completely different chain of events and relationships.
One interesting concept could be how the characters' relationships are altered by time travel. For example, if a character goes back in time and meets their past self or a loved one at a different point in their life, it can create complex emotional and moral dilemmas.
First, you need to be well - versed in the world of the Dark Artifices. Read the books carefully to understand the rules, the characters, and the overall setting. Then, come up with an original idea. It could be a new adventure for the existing characters or a story from the perspective of a minor character.
Another idea might be a plot where the characters have to face a new, previously unknown threat that is related to the dark artifices but has a different origin. This could test their skills and relationships in new ways. Maybe it's a type of dark magic that was thought to be extinct but has been awakened.
In a 'dark matter fan fiction', dark matter could be the key to time travel. A group of scientists discover that by harnessing the unique properties of dark matter, they can open portals to different time periods. However, they soon realize that there are other forces at play in these time portals, related to the very nature of dark matter that they don't fully understand yet.
One idea could be exploring a character's dark past that has been hidden until now. Maybe they have a secret power that was a revelation in the fan fiction world.
You could write a fan fiction about a group of survivors in Lothric who are trying to find a way to escape the cycle of fire and death. They could discover ancient secrets about the world that the main characters in the game don't know. This group could include characters from different classes and backgrounds, like a pyromancer, a cleric, and a rogue. Their interactions and the different skills they bring to the table would make for an interesting story as they navigate the dangerous world of Dark Souls 3.
A 'dark family' in HP fan fiction could also be portrayed as having a different view on the use of magic items. For instance, they might see the use of certain dark artifacts not as dangerous but as a means to gain power, and the fan fiction could explore how they try to acquire and control these items without getting caught by the Ministry of Magic.
One idea could be to explore the backstory of the dark guardian. Maybe they were once a good being but something tragic happened to turn them dark. Another idea is to have a young protagonist who befriends the dark guardian and tries to bring out their good side.