Well, it could be about an original character (oc) who is reborn in the DxD universe and has to adapt to the unique rules and powers there. Maybe the oc discovers a new power within themselves that is unique to their rebirth.
The plot might involve the oc making new alliances and enemies. Since they are reborn, they have a fresh start. They could team up with some of the known characters in DxD, like Issei or Rias, to face common threats. At the same time, their new abilities might draw the envy or suspicion of others, creating enemies.
Maybe there is a new character created specifically for this fanfiction as the main antagonist. This new character could have a connection to the oc's past life or the reason for their rebirth. They might be trying to prevent the oc from fulfilling a certain destiny or unlocking their full potential.
Well, the plot could involve the original character (oc) suddenly finding themselves in Luffy's world. Maybe they are reborn as a new member of the Straw Hat crew. They could have unique abilities from their previous life that help the crew in their adventures, like being able to sense danger more acutely or having a special knowledge of some hidden treasures.
Well, it could be about an original character (oc) who dies in their own world and is reborn in the DC universe. Maybe they gain superpowers and have to figure out how to survive among the well - known DC heroes and villains.
One possible plot could be that the OC, reborn as a Senju, discovers new powers within the Senju bloodline. They might struggle to fit into the Senju clan at first due to different memories and personalities from their previous life. As they grow, they could befriend the young Hashirama and Tobirama, and play a role in the early development of the Hidden Leaf Village. Maybe they introduce some new ideas from their past life that help the Senju in their battles against the Uchiha.
Well, the plot could involve the OC being reborn with some special powers. Maybe they're reborn as an Asgardian but with a unique twist. They could then interact with the existing MCU characters like Thor or Loki, and get involved in their adventures, perhaps helping to stop a new threat to Asgard or even all of the Nine Realms.
In an 'OC reborn in Inuyasha fanfiction', the OC could be reborn as a normal human in a village near where Inuyasha and Kagome often pass by. They grow up hearing stories about demons and the half - demon Inuyasha. One day, they accidentally stumble upon Inuyasha and Kagome during one of their battles with a demon. Intrigued by their world, the OC decides to join them. Their unique perspective as a modern - day thinker (assuming they have some modern sensibilities reborn into this feudal - era world) could help Inuyasha's group in unexpected ways, such as coming up with new strategies to deal with demons or finding hidden Shikon Jewel fragments.
The plot might center around the fairy OC trying to fit into the world of Highschool DxD. Since she's a fairy, she could bring a new element of magic and mystery. For example, she could be on a quest to find a lost fairy artifact in the Highschool DxD universe, which leads her to interact with different characters and form alliances or rivalries. She might also have to deal with the fact that fairies are not common in that world and face some prejudice or misunderstanding from other characters.
Well, it could be about the OC, as the son of Thor, coming to the Highschool DxD world and showing off his godly powers. Maybe he'd have to deal with the various factions in the school, like the devils, angels and fallen angels, while also trying to fit in.
One possible plot could be that the OC gamer, being a huge fan of the Highschool DxD world in his own gaming realm, somehow gets transported into the world. He then meets Raynare. Maybe at first, Raynare tries to use him for her own purposes as she usually does. But as the story progresses, the gamer's unique skills from his gaming world start to change her perception of him. For example, he might be able to analyze situations like he does in games and come up with strategies that no one in the Highschool DxD world has thought of. This could lead to an interesting dynamic between them, with Raynare slowly starting to trust the gamer and they end up on some kind of adventure together.
Well, it could start with the discovery of the OC's identity as Grayfia's son. This would surely stir up a lot of reactions among the different factions in the Highschool DxD universe. He could be thrust into various adventures, like having to protect a certain character or retrieving a powerful artifact. His relationship with his mother, Grayfia, would also play a significant role, perhaps she has certain expectations of him that he struggles to meet while also dealing with his own desires and goals.