If Merlin travels back in time, his relationship with Arthur would be very different. In the past, Arthur might not trust him at all at first. Merlin would have to prove himself all over again. With Gwen, he might be more aware of her future importance and try to protect her in a different way. And his relationship with the other knights could be completely new, as they might see him as a stranger with strange powers.
Well, a really interesting plot twist might be that when Merlin travels back in time, he discovers that the future he thought he knew was all wrong. Maybe the events that led to Arthur's rise and fall were actually set in motion by a time - traveling sorcerer from even further in the future. He could also find that the people he thought were his allies in the past were actually working against him all along, which would completely change his view of history and his role in it.
She could meet the founders of Hogwarts. Imagine Hermione having a conversation with Rowena Ravenclaw about the importance of knowledge and wisdom. She might also meet Godric Gryffindor and learn about the true meaning of courage from him. Another person she could meet is Salazar Slytherin. It would be very interesting to see how she would interact with him, given his views on blood purity.
In some cases, the antagonist could be Esme herself, or rather a version of her from the past. The past Esme might be more naive or self - centered and not understand the implications of Esme's actions in the past. The present Esme is trying to make positive changes, but the past version of herself keeps getting in the way, either through her own actions or by influencing the people around her in a negative way.
One possible plot could be that Esme travels back to a time when she was about to make a crucial life decision. For example, she might go back to the moment before she met her significant other. In the past, she could then have the chance to see things from a different perspective. Maybe she realizes that the decision she made back then was actually the best one, or she might find out new things about herself or the people around her that she didn't know before, which could lead to a whole new set of adventures and self - discovery in the past and ultimately change her view of her present life.
One common theme is redemption. Percy often goes back in time to correct past mistakes, either his own or those of others, seeking a kind of redemption. For example, in some stories, he tries to save characters who died in the original timeline. Another theme is self - discovery. When he's in a different time, Percy learns more about himself and his powers. He might discover new abilities or a different side of his personality.
One common theme is self - discovery. When Rey travels back in time, she often learns more about herself, her powers, and her place in the galaxy. For example, she might find out about her family's past in a different era.
I can recommend you a novel that travels back to ancient times. It's called " The Peerless Beauty in Ancient Times." This novel was about a modern girl who accidentally traveled to ancient times and became a beautiful woman. She experienced all kinds of tests and challenges in ancient life and finally obtained her own happiness and achievements. The plot of the novel is full of twists and turns, the characters are vivid, and the language is beautiful. It is the best choice for you to read.
One popular plot could be Ash going back in time to the very beginning of his Pokémon journey. He might use his future knowledge to catch Pokémon more effectively, like getting a Pikachu right away without the initial reluctance. Another plot could be him traveling back to save a Pokémon from a past disaster that he couldn't prevent in his original timeline. For example, he could go back to stop the destruction of a Pokémon habitat that led to the endangerment of a certain species. A third popular plot might be Ash traveling back to meet his younger self and teach him important lessons about Pokémon training and friendship that he learned over the years.
In some cases, it could be other time - traveling vampires or supernatural beings who have their own agendas. They might not want Bella to interfere with the past as it could disrupt their own plans or power bases. These antagonists could be more shadowy figures, working behind the scenes to thwart Bella's efforts.