Perhaps there could be a scenario where Arizona is treating a patient who has a connection to one of JJ's cases. JJ comes to the hospital to interview the patient and she and Arizona end up collaborating more closely. They might start sharing personal stories during their interactions and form a strong friendship that leads to more adventures together.
Another possibility is that they meet in a non - work - related setting. Say, they are both at a conference in a different city. They start chatting and realize they have a lot in common. They could then get involved in some sort of adventure together in that city, like trying to find a missing artifact that has a connection to both their pasts.
One idea could be that Arizona and JJ are both called to work on a special case that involves aspects of both their fields. Maybe a crime that has medical implications and they have to combine their expertise to solve it. For example, a series of poisonings where JJ uses her profiling skills to track down the suspect while Arizona helps figure out the type of poison and how to treat the victims.
One idea could be a story where Callie and Arizona decide to take a sabbatical from their busy medical lives and go on a road trip together. They discover new places, have heart - to - heart conversations, and rekindle their relationship. Another could be a plot where they face a difficult medical case together that tests not only their medical skills but also their relationship as a couple.
One idea could be that they adopt a child together. They navigate the challenges of parenting while still being part of their dangerous jobs. Another could be that they decide to move to a new city for a fresh start and face the difficulties of making new friends and fitting into a new community. Or perhaps they host a big family - style dinner with all their friends from work and chaos ensues as they try to keep everyone happy.
One interesting idea could be a crossover with "Moana". Elsa's ice powers and Moana's connection to the ocean could create a really cool dynamic. Maybe Elsa accidentally freezes part of Moana's ocean and they have to work together to fix it. Another could be with "Tangled". Rapunzel's long hair and her adventurous spirit combined with Elsa and Anna's journey in Frozen 2 would be exciting. Rapunzel could use her hair to help them climb mountains or cross chasms. A third idea is a crossover with "Beauty and the Beast". Belle's love for books and knowledge could help Elsa understand more about her powers and the history of magic in the Frozen world.
Well, here's a plot. A new agent joins the BAU who seems to have a romantic interest in Reid. JJ gets jealous and starts to analyze her own feelings for Reid. Meanwhile, they are working on a case that involves a cult that has some sort of mind - control element. As they work to free the victims, JJ and Reid have to face their feelings head - on. This plot would involve a lot of drama, both in terms of the case and their relationship.
One idea could be an Ultraman crossover with Godzilla. Picture Ultraman teaming up with the giant lizard to fight a common enemy, like an alien kaiju that's too powerful for either of them alone. It would be epic to see their different powers combine, for example, Ultraman's energy beams along with Godzilla's atomic breath.
One idea could be an Orochimaru crossover with the Harry Potter universe. Orochimaru could be a dark wizard from a far - off land who comes to Hogwarts seeking ancient magic. He might try to corrupt some of the students with his snake - like ways and thirst for power.
One idea could be a crossover with the Marvel Universe. Beerus could visit Asgard and have an encounter with Thor. Maybe they have a friendly competition over who is stronger in terms of combat skills or who can handle more powerful magical items. Another could be a crossover with the Harry Potter world. Beerus might be intrigued by the magic there and get involved in a battle against Voldemort, using his godly powers in a completely different magical setting.
One idea could be a crossover with a high - fantasy series like 'The Lord of the Rings'. The Claymores' unique abilities and the dark world they live in could be juxtaposed with Middle - earth's magic and races. For example, a Claymore could be mistaken for an elf at first due to their somewhat similar physical features, but then their true nature and powers would shock the inhabitants of Middle - earth.
Well, you could have a centipede crossover with a superhero story. The centipede could gain superpowers, like the ability to scale buildings quickly with its many legs or spit out some kind of sticky substance to immobilize villains. Or it could be a centipede from an alien planet in a science - fiction crossover. It might have a different biology compared to Earth centipedes and interact with the human characters in strange ways. Also, consider a centipede in a historical fanfiction. For instance, in a medieval setting, it could be seen as a symbol of bad omen or a creature that has some sort of hidden knowledge.
How about a Ranma crossover with Harry Potter? Ranma could be a foreign exchange student at Hogwarts. His martial arts could be a form of magic in the wizarding world. Or a crossover with Fullmetal Alchemist. Ranma might get involved in the search for the Philosopher's Stone or help the Elric brothers with their alchemical problems. There are so many possibilities for Ranma crossover fanfiction.