One popular pairing is Joker with characters from the Persona series like Akechi. Their complex relationship in the game makes for interesting crossovers. Another is Joker with characters from other RPGs, such as Link from The Legend of Zelda. It's cool to see how their different abilities and personalities interact. Also, Joker and characters from the Final Fantasy series like Cloud are quite popular.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Persona 5 Joker crossover fanfics. Just use the search function and type in 'Persona 5 Joker crossover'. Another option is FanFiction.net. There are also some dedicated Persona 5 fan communities on social media platforms where fans might share their favorite crossover fanfics.
A great storyline might involve a fusion of the two worlds' mechanics. For example, the Velvet Room from Persona could have some connection to Joker's world. The Igor-like figure could offer Joker and his friends some new kind of power or knowledge that they use to combat a common foe. Or perhaps the Persona characters learn about Joker's Metaverse Navigator and try to replicate it in their world, which leads to all sorts of unforeseen consequences and adventures.
Some characters might not get along so well. For instance, a more serious Persona character might find Joker's carefree attitude a bit off - putting. However, as they face challenges together, they would start to understand and respect each other. The Persona characters could introduce Joker and his friends to the concept of the Collective Unconscious in more detail, and the Phantom Thieves could show them how to use their skills in a more urban, modern - day setting. There would be a lot of banter and friendly competition between the two groups as they learn from each other.
The 'joker and his girls persona 5 fanfiction' could potentially focus on various storylines. It might involve adventures that Joker and the girls embark on together. They could be facing off against powerful enemies in the Persona 5 universe. Another possibility is that it explores the emotional bonds between them. How they support each other through difficult times, and how their relationships evolve over the course of the story.
Maybe the Velvet Room attendants from both games somehow get their worlds mixed up. Igor from Persona 5 and Margaret from Persona 4 have to work together to set things right. This leads to the characters from both games interacting. The Phantom Thieves might learn some new combat techniques from the Investigation Team and vice versa. They could then use these new skills to face a common threat that emerges from the merging of their two realities.
Maybe there's a strange distortion that merges parts of Inaba and Tokyo. The characters from both Persona 4 and Persona 5 find themselves in this strange new place. They start to notice that the Shadows in this merged world are more powerful and have new abilities. The Investigation Team and the Phantom Thieves must figure out how to adapt their Personas and strategies to fight these new threats while also dealing with the cultural differences between their two groups.
Well, Persona Crossover Archive Fanfiction is really interesting. It's basically fanfiction where the world of Persona meets other worlds. For example, you might see Persona characters interacting with characters from other popular games or even from different anime series. Fans write these stories to have fun and express their creativity, often coming up with unique plot twists and character relationships that add a whole new dimension to the Persona experience.
One idea could be that Kirby swallows a Persona and gains its powers. This would lead to some really interesting battles and interactions. Kirby could then use the Persona's skills in the Dream Land setting, creating a whole new dynamic.
I really like Yu Narukami from Persona 4 in the crossover. He brings his calm and collected leadership from his own game. His ability to analyze situations and keep the group together is really cool when he's interacting with the Persona 5 characters.