One interesting concept could be the unique puzzles and how they are re - imagined in the fanfiction. For example, the way the characters might approach a new type of puzzle that wasn't in the original series.
Nonoha is also quite popular. Her kind - hearted nature and her growth as a puzzle - solver throughout the series make her an interesting character to write about in fanfiction. She might be the focus of stories that explore her relationships with other characters.
One interesting concept could be the unique relationship between the brain worms and the Force. Maybe the brain worms have a special ability to interact with the Force in ways not seen before. Another could be how they affect the characters' decision - making. For example, a character infected with a brain worm might make choices that are completely out of their normal character, leading to new and unexpected plot developments.
Well, there could be stories about sisterhood. For example, how they support each other during exams. Members might study together, share notes and resources, which strengthens their bond.
Well, in some Pinky and the Brain fanfiction, there are storylines that explore their past. Maybe a story about how they first met at the lab and what their early days of planning world domination were like. There could also be a plot where they are shrunk down to microscopic size and have to navigate the inside of a human body to find a way to return to normal. Additionally, a fanfic might focus on Pinky's family and how they react when Pinky brings the Brain home for a visit.
In the backrooms fanfiction, the concept of the 'safe rooms' is really cool. These are areas within the backrooms where the entities don't seem to go or where the environment is a bit more stable. It gives the characters a brief respite from the constant danger and allows for some interesting plot developments as they plan their next moves.
One interesting concept is exploring different cursed techniques for the characters. For example, in some JJK fanfictions, Yuuji might have a cursed technique that allows him to communicate with the souls of the dead in a more detailed way. Another concept could be alternate universes where the characters have different relationships or roles. In some fanfictions, Megumi could be the main villain instead of an ally, which completely changes the dynamic of the story.
One interesting concept could be new micro - games. For example, a fanfiction might introduce a micro - game where the character has to dodge falling musical notes in a rhythm - based challenge. This would add a new and unique gameplay element to the Warioware universe.
One interesting concept could be alternate universes where the Planeswalkers have different alignments or abilities. For example, a fanfiction might explore a world where Jace Beleren is a villain instead of a hero. Another concept could be the exploration of the backstories of minor characters in the MTG lore. In some fanfictions, these characters are given more depth and their own story arcs that are not fully explored in the official lore. Also, there are fanfictions that focus on the relationships between different races in the MTG universe, like how elves and humans interact in a more detailed and unique way compared to the official stories.
Some interesting concepts in MJ fanfiction are those that re - imagine his concerts. For example, a fanfiction could describe a concert where he uses holographic technology in a way that was never possible during his lifetime. There are also concepts like exploring his family life in a more fictional and detailed way, showing his interactions with his siblings and parents in made - up scenarios that give new perspectives on his personal life.
One interesting concept could be exploring different character backstories that were not fully developed in the original. For example, delving deeper into a minor character's family history and how it ties into the overall bloodline theme. Another could be imagining alternate bloodline inheritances that change the power dynamics in the story.