Another concept could be a plot where a powerful dark wizard from the Harry Potter world teams up with the vampires in True Blood to take over both the wizarding world and the vampire - human world. This would force Harry Potter and his friends to team up with some of the True Blood characters, like Sookie Stackhouse, to stop the evil alliance.
One idea could be a crossover with 'The Vampire Diaries'. Picture Damon Salvatore showing up in Bon Temps and getting into a power struggle with some of the True Blood vampires. It would be full of drama and vampire politics.
Archive of Our Own (AO3) is also a great place. It has a well - organized tagging system. So, if you search for 'True Blood' and then look for related crossover tags, you're likely to find some high - quality fanfictions. Plus, the community there is quite active and often leaves useful comments.
Well, perhaps in this fanfiction, the True Blood virus spreads to the Naruto universe. The Hidden Villages have to deal with the sudden appearance of vampires. Naruto, being the hero, tries to find a cure. He teams up with some of the True Blood characters who have knowledge about the virus. Along the way, there are battles against vampire ninjas who have turned evil due to the virus.
Maybe a character from True Blood, like Sookie, could travel to Forks. Her faerie abilities would be quite a novelty in the Twilight setting. The Cullens might be intrigued by her powers and her connection to the supernatural in a different way than they are used to. This could lead to all sorts of interactions, from alliances to rivalries.
The vampires in Twilight are often more reserved and struggle with their inner 'humanity' more than those in True Blood. So, a character like Carlisle from Twilight might try to teach some of the True Blood vampires about self - control. In return, a True Blood vampire like Eric could show Carlisle how to be more assertive in the vampire world.
Perhaps a love triangle could be created in the crossover fanfiction. A female character from 'Twilight' could fall in love with a vampire from 'True Blood' while also having feelings for a character from her own world. This would create a complex web of relationships and loyalties, and the different vampire abilities and cultures from both series would add depth to the story.
One idea could be a vampire from True Blood visiting Forks from Twilight and causing chaos among the Cullen family. Maybe they have different views on how to co - exist with humans and it leads to a big conflict.
One idea could be a story where the vampires from 'True Blood' and 'The Vampire Diaries' have to team up to fight a common enemy, like a powerful ancient vampire or a new type of supernatural threat. Another could be a love story between a character from 'True Blood' and one from 'The Vampire Diaries', exploring how their different vampire cultures affect their relationship.
The wizards would likely be cautious at first when interacting with True Blood vampires. They might see them as dangerous and unpredictable. For instance, Harry Potter himself would probably keep his wand at the ready. The vampires, on the other hand, might be curious about the wizards' magic.