Perhaps Damian Wayne goes back in time to a period when Gotham was in a much more chaotic state. He could try to influence the early days of Batman's crime - fighting career. He might introduce new technologies or fighting techniques that he learned in the future. He also could be on a mission to stop a particular villain from ever rising to power. He would have to deal with the differences in the past, like the less advanced technology and the different mindset of the people in Gotham at that time.
In a 'damian wayne goes back in time fanfiction', he could go back to the time when the Wayne family was first targeted. Damian, being the trained warrior he is, tries to stop the initial crime that led to his family's downfall. He has to be careful not to disrupt the timeline too much, but at the same time, he's desperate to save his family. He might even encounter a younger version of his mother, Talia al Ghul, and that could create a whole new set of complex relationships and storylines.
Well, one possibility could be that Damian Wayne goes back in time to prevent the death of his father, Bruce Wayne. He might use his skills and knowledge from the future to change key events that led to that tragic outcome. Maybe he teams up with a younger version of his father and other allies he knew from his own time, like Nightwing or Batgirl, to take on enemies that were too powerful in the past but not so much with his future knowledge and abilities.
Well, perhaps she could be a transfer student. She'd bring her combat skills from the Batman world to Hogwarts. Maybe she'd get into trouble for using non - magical ways to solve problems at first, like trying to physically fight a magical creature instead of using a spell. And she'd probably be really good at Defense Against the Dark Arts because of her training as a vigilante.
He might meet a younger version of Alfred. Alfred has always been an important figure in the Wayne family and Damian could learn a lot from him, or even try to give him some hints about the future. Also, he could run into a younger Commissioner Gordon. Their interactions could be really interesting as Gordon is such an important ally of Batman.
Maybe Damian could be a transfer student to Hogwarts. He'd bring his combat skills and detective - like thinking. He might get into trouble for using his non - magical combat methods in the magical school, but also use his wits to solve mysteries that even the Hogwarts students can't.
One possible plot could be that Wonder Woman and Damian Wayne cross paths during a major threat to Gotham City. Damian, with his combat skills and detective mind, teams up with Wonder Woman, who brings her superhuman strength and Amazonian wisdom. They start off clashing due to their different approaches but gradually learn to work together and defeat the villain who was planning to destroy Gotham and use its resources for evil purposes.
One possible plot could be that Kagome goes back in time and tries to change a major event in the past. For example, she might try to prevent a big battle that had a lot of casualties. She could use her modern knowledge and skills to her advantage in the past, like using first - aid knowledge to save lives.
Well, one possibility could be that Kurama goes back to a time when he was first captured by the shinobi. He might try to change things so that he doesn't end up in their hands initially. He could use his knowledge of the future to outwit his captors and escape much earlier, and perhaps even start a new life in a different part of the world.
Well, in the fanfiction, Itachi could go back in time and decide to train his younger self more rigorously. This would not only make him stronger but also change the way he approaches his future tasks. He might also try to influence Sasuke at an earlier age, guiding him in a different direction than in the original timeline. And he could befriend some characters earlier to build a stronger support network for the Uchiha clan.
Maybe Yusei goes back in time to prevent a great disaster that happened in the past. He could use his knowledge from the future to change certain events and save lives.
In a 'kaneki goes back in time fanfiction', perhaps Kaneki goes back to when he was still a normal college student. He then decides to study more about ghouls secretly. He could use this knowledge to try and find a way to co - exist peacefully between ghouls and humans from the very start. He might start by trying to change the views of some key people in the CCG, using his understanding of their future actions.
Well, one possible plot could be that Zuko goes back in time and tries to prevent the Fire Nation's aggression from the start. He could use his knowledge of the future to change things for the better, like trying to influence his father in a different way to avoid the war.