One idea could be Molly and the ghost having to team up to save their town from a mischievous spirit. They could use Molly's positive energy and the ghost's spooky powers to defeat it.
The story might be interesting because of the unexpected situations that can occur. Since it's a ghost involved, there could be all kinds of supernatural elements and how Molly McGee reacts to them. For example, the ghost could make things float around or disappear, and Molly's reaction to these strange happenings, whether it's shock, amusement or determination to fix things, adds to the allure of the story.
One idea could be that Molly and Andrea are paired for a school project. At first, they clash because of their different personalities. But as they work together, they start to understand each other better. For example, Molly's positive attitude might start to rub off on Andrea, who is usually more reserved. Another plot could involve them getting lost in a mysterious part of town while on an errand and having to rely on each other to find their way back. They could also discover a shared love for a particular type of music or art during this adventure, strengthening their bond.
In addition to Molly and the ghost, the other spirits in the show can also be great characters to focus on. They can bring in different elements of the ghost world, like their own unique powers or cultural references from the afterlife. This can add more complexity and mystery to the fanfic.
Well, in this single story, it might be about the unique relationship between the ghost and Molly McGee. It could involve their first encounter or a special adventure they had together.
One idea could be exploring the backstory of the 'Ghost of You' more in - depth. Maybe it was a lost love who died tragically, and the fanfic could focus on the main character's journey to find out the truth behind their death. Another plot could be about the 'Ghost of You' trying to communicate a hidden message to the living world through the main character.
You could also do a fanfic about Jin's time in exile. What if he encounters a group of bandits who are actually descendants of an ancient Japanese clan that was wronged in the past? They initially see Jin as an enemy but as he proves his worth and his cause, they end up helping him. This would involve Jin learning about a part of Tsushima's history he was previously unaware of, and he could use this new - found knowledge to his advantage when he finally returns to face the Mongols.
A possible plot is Molly Hooper being drawn into a world of dark magic while trying to solve a strange death at a historical site. It could involve her trying to figure out how the victim was involved with a secret occult group. Or, she could be targeted by a serial killer who has a fascination with her work in the morgue, and she has to use her wits to outsmart the killer. She might also find herself in a situation where she has to choose between her loyalty to Sherlock and her own safety in this dark fanfiction scenario.
One idea could be that they face challenges from the wizarding community who don't understand their relationship. Another could be them exploring new magical abilities together as a married couple. Maybe they could also go on adventures to discover ancient magic secrets that are related to their combined family lineages.
One idea could be that Casper befriends a lonely alien who has crash - landed on Earth. They team up to find a way to repair the alien's ship while also having adventures in the human world and teaching each other about their different cultures.
Perhaps a plot where Ash and Molly Hale get transported to an alternate dimension where the rules of the Pokemon world are different. In this dimension, Pokemon battles are more extreme and dangerous. They have to quickly adapt and find a way back home. They meet some strange characters in this dimension who either help or hinder their progress. Their friendship grows as they rely on each other to survive in this unfamiliar and often hostile environment.