Character balance can be difficult. Different magical law settings may have different power levels for characters. So, when you cross them over, you need to ensure no character is too overpowered or underpowered. Also, understanding the core concepts of all the magic law systems you're using is tough. There's a lot of research involved to get it right.
One great thing about Chicago PD and Law & Order: SVU crossover fanfiction is the unique character interactions. Writers can bring together the tough cops from Chicago PD and the specialized detectives from SVU. For example, they might create a scenario where a case starts in Chicago but has ties to New York, leading to a joint investigation. This allows for some really interesting dynamics as the characters from different shows with different methods have to work together.
Another theme is the exploration of new relationships. Characters from different shows meet and form friendships or rivalries. It can be really interesting to see how personalities mesh or clash. Also, there's often the theme of a greater conspiracy that spans across the shows' universes, which forces the characters to work together to solve it.
Another plot could involve a human trafficking ring that operates between the two cities. SVU has some experience with these types of cases in New York, but the Chicago PD has its own intel on the local side of things. The two teams have to combine their resources and knowledge to take down the entire ring. This would involve a lot of undercover work and tense moments as they try to rescue the victims and arrest the criminals.
One that I think stands out is 'The Magic Law Convergence'. In this fanfiction, the author does an amazing job of bringing together different magical laws. They explain how the magic from one world affects the magic in another world in a very detailed and interesting way. There are also some great character relationships that are formed because of these crossovers, making it a really engaging read.
Character development is a big part. You'll see how Brian and Justin change over time in these stories. Brian might become more open and vulnerable, while Justin could grow in his confidence and understanding of the world. The settings can vary widely too, from the city life they are used to in the original show to completely new and fictional places. And the dialogue in these fanfictions is often very sharp and reflects the personalities of the two characters well.
Brian and Justin fanfiction often has strong character voices. The way Brian talks, with his sarcasm and charm, and Justin's more idealistic and passionate way of speaking are well - replicated. The themes of love, acceptance, and self - discovery are prevalent. It shows how they find love in each other in a world that may not always be accepting. Also, the detailed descriptions of their physical and emotional intimacy, not in a vulgar way but in a way that shows their deep connection, are also a characteristic.
One great 'law and order svu crossover fanfiction' story is 'The Convergence'. It combines the SVU team with characters from another popular crime show. The plot is full of twists and turns, and the character interactions are really well - written.
Another theme is magic and adventure. Given their magical background, fanfictions often involve them going on magical quests or getting into magical trouble. For example, they might have to solve a mystery related to a new spell or a magical artifact. This allows for a lot of creativity in the stories as the authors can come up with all sorts of magical elements.