What are some interesting plot ideas in Naruto x Hellsing Fanfiction?

A different plot could be that a curse has been placed on both Naruto and Seras. They start having visions of each other's past traumas. As they try to figure out how to break the curse, they discover that it was placed by an old enemy of both the ninja clans and the Hellsing organization. To break it, they need to find a magical artifact hidden in a dangerous dimension that is guarded by powerful demons and rogue ninjas.

One idea could be a crossover where Naruto's world is invaded by supernatural forces from the Hellsing universe and Integra has to team up with Naruto to fight them. Naruto's ninja skills combined with Integra's leadership and the power of the Hellsing organization would make for an exciting story.

Another idea is a story where some of the Naruto villains team up with the antagonists from Hellsing. Orochimaru might be interested in the vampire technology or the powers of the vampires in Hellsing. He could try to use it to further his own goals, and this could lead to a complex and action - packed plot with both Naruto and Hellsing characters caught in the middle.

A possible plot could involve Schrodinger being sent on a mission with Seras by the Hellsing Organization. During the mission, they face a powerful enemy that forces them to rely on each other's unique abilities. As they work together, a deeper understanding and an unexpected bond form between them. This could explore how their different natures, Schrodinger's quantum - like existence and Seras' vampiric nature, interact and complement each other in the face of danger.

Maybe there's a rift in the multiverse that connects the two worlds. Integra discovers Danny's powers and tries to recruit him to help in the fight against the vampires. Danny, being a hero in his own world, is hesitant at first but realizes the importance of cooperation when he sees the scale of the vampire threat in the Hellsing universe. He could use his intangibility and flight to outmaneuver the vampires while Alucard and Seras provide the heavy - hitting attacks.

One idea could be the reader being a new recruit in the Hellsing organization. Alucard becomes intrigued by the reader's unique courage and tenacity. He starts to protect the reader during missions, leading to a growing bond between them.

One interesting idea could be their unique relationship dynamic. Seras is a vampire and Pip is a human, so exploring how they bridge the gap between their two worlds can be really engaging.

Maybe an OC devil who was once a human and was turned into a devil against their will. They could struggle with their new identity while still having some human emotions, which would create complex relationships with the Hellsing characters.

One idea could be a battle between the forces of Hellsing and some unique threat from the Alexandee universe. Maybe the Hellsing crew has to deal with a powerful magic user from Alexandee who is causing chaos in their world.

A plot could involve a powerful ancient evil that has been sealed away in both universes. The seal is weakening in both the Hellsing world and the Supernatural world simultaneously. So, the protagonists from both sides must combine their knowledge and resources. Alucard from Hellsing could bring his immense power and immortality, while Sam and Dean Winchester could offer their knowledge of a wide variety of American - based supernatural entities and their hunting skills.