A third plot idea is that Sylvester and Pepe are both competing in a grand tournament in a magical realm. At first, they see each other as rivals. But as the tournament progresses, they realize that there is a greater evil at work that is trying to manipulate the outcome. So they team up to expose the conspiracy and in the process, become great friends.
One idea could be that Sylvester and Pepe are from different worlds but get accidentally transported to a strange new place where they have to rely on each other to survive. Maybe Sylvester's strength and Pepe's wits combine to overcome various obstacles like finding food and shelter in this unknown land.
Sylvester is often seen as a bit of a bumbling character, while Pepe is more sly. In a fanfiction, you could have a situation where Sylvester's clumsiness gets them into trouble, like accidentally knocking over a valuable item in a magical shop. Pepe then has to use his slyness to talk their way out of it, showing how their personalities interact.
One idea could be that Sue discovers she's pregnant and has to deal with the reactions from the glee club members. She might initially try to hide it as she doesn't want to show any vulnerability. Then as the pregnancy progresses, she starts to soften a bit and the students end up being surprisingly supportive.
Maybe X - 23 is on the run from some anti - mutant forces and finds herself in Gotham. Batman initially suspects her but then realizes she's being hunted unjustly and decides to help her. They then have to fight off the hunters while also dealing with Gotham's regular villains.
A plot where 707 and MC get trapped in a virtual world that is a distorted version of their own reality. They need to find a way to escape by solving puzzles and relying on each other's unique skills. For example, 707's hacking abilities could be crucial in finding glitches to break free.
One plot idea could be that Aether and Yanfei team up to solve a mystery in Liyue. They might start by investigating strange disappearances in the city. Along the way, they discover that there's a powerful ancient magic at play. As they work together, they start to develop feelings for each other. Another idea is that Yanfei needs Aether's help to defend a client in a complex legal case in Liyue. Their interactions during the case lead to a deepening of their relationship.
Well, you could focus on Sonic's origin story in the Sonic X Rewritten fanfiction. Maybe there was a long - lost civilization that was responsible for his super speed. Or you could have a plot where Sonic loses his speed for a while and has to rely on his other skills and the help of his friends to get it back. And a time - travel plot would be cool too. Sonic and his friends could go back in time to prevent a disaster that would change the future of their world.
One idea could be that the OC is a new Keyblade wielder who meets Ventus during his training. They start as rivals, constantly competing in battles and challenges. But as they face a powerful enemy together, they realize their combined strength and start to develop feelings for each other.
Another plot could be that the reader is a journalist investigating the strange disappearances around an old, abandoned studio rumored to be haunted by Bendy. As the reader delves deeper, they encounter Bendy and instead of being afraid, they start to see the misunderstood side of him. This leads to a relationship where the reader tries to tell Bendy's story to the outside world and protect him from those who would do him harm.
One idea could be that they are forced to work together on a mission in the human world. They initially clash due to their different methods but gradually come to respect each other. Another could be a time - travel plot where they end up in a different era and have to rely on each other to get back. Or perhaps they meet in a magical realm that is neither their own and must team up to escape.
Perhaps a plot where Batman and Batgirl are investigating a series of strange disappearances in Gotham. They find out that it's related to a secret underground organization that is using some sort of new technology. Along the way, they start to realize their feelings for each other are deeper than just being crime - fighting partners. But they have to put their personal feelings aside to stop the organization before it's too late.