A plotline might involve Stitch trying to reform Leroy. Since Stitch has his own journey of becoming more good - natured, he could try to do the same for Leroy. They could face challenges together and through those experiences, their relationship deepens. This could involve them facing other villains or threats in their world and relying on each other's unique abilities. It could also be a story about Leroy's redemption arc with Stitch as his guide, showing how their relationship evolves from animosity to a strong bond over time.
I'm not sure of specific Stitch x Leroy fanfiction offhand. But you can try searching on popular fanfiction websites like Archive of Our Own. Just type in 'Stitch x Leroy' in the search bar and you might find some interesting stories.
One possible plotline could be a romantic adventure where Will and Cornelia go on a quest together. They might face various challenges that test their relationship and their individual strengths.
One possible plotline could be that Henrietta, with her own set of skills and experiences, somehow gets transported to the Naruto universe. She might have to adapt to the ninja world, and Naruto could help her in this process while also learning from her in return.
In some 'batman x kagome fanfiction' plotlines, Kagome might be mistaken for a meta - human in Gotham. Batman starts to investigate her, and as he does, he discovers the truth about her world. This could lead to a series of adventures as they both learn from each other. Another idea is that a villain from one of their worlds somehow manages to cross over to the other. They then have to combine their skills and knowledge to defeat the villain. There could also be a plot where Kagome uses her knowledge of ancient magic to help Batman upgrade his technology in a unique way.
One possible plotline could be that Shimo has some sort of special power that can either help or hinder Godzilla. For example, Shimo might be able to communicate with Godzilla in a way no one else can.
A possible plotline could be a time - travel scenario where Kaiba somehow travels back in time and meets Atem before he was sealed away. This could lead to a series of events where Kaiba tries to change the course of history regarding Atem. Another plotline might be that they are both trapped in a mysterious dimension together and have to rely on each other to escape, which forces them to set aside their differences and work together.
One possible plotline could be that Naruto somehow gets transported to the world of satellizer. There, he might use his ninja skills to help satellizer in her battles or against her enemies.
One possible plotline could be a what - if scenario. For example, what if Sarutobi had a closer relationship with Kushina before she met Minato. Maybe they could be friends who gradually develop deeper feelings as they face various challenges in the Hidden Leaf Village together.
A plotline might involve a magical or chakra - based accident that binds Naruto and Arturia together in some way. They have to figure out how to break the bond while also facing challenges that come their way. For example, they might be hunted by a group who wants to use their combined power for evil. In some fanfictions, there could also be a love triangle situation involving one of their friends or comrades from their respective worlds.
One possible plotline is that they have to face a new and powerful enemy that neither of them can defeat alone. So they have to combine their powers and skills. For instance, Percy's water - based powers, Jason's control over the wind and lightning, and Nico's ability to manipulate the shadows could be used in unison to defeat a giant or a powerful sorcerer.