Regret is a very common theme. Since the characters are going back in time, they often think about the things they did wrong before and try to correct them.
Well, self - discovery is also quite common. When characters go back in time, they often see their old selves in a new light. They might realize things about their personality, their values, and their relationships that they didn't before. This can lead to a journey of self - exploration and growth. In some fanfictions, the character may have forgotten who they really were in the past, and going back in time helps them to rediscover their true identity.
Another theme is redemption. By going back in time, characters get the opportunity to make up for their past misdeeds and become better versions of themselves. For example, in many stories, a character who was once a villain can turn into a hero by changing their actions in the past. It's also about second chances. Characters are given a new opportunity to live a different life or make different choices, which can lead to different outcomes for themselves and the people around them.
Another theme is power. She may use her knowledge of the future to gain power or influence in the past. This could be political power, like influencing the decisions of the lords, or personal power, such as learning combat skills earlier. It's about how she can rewrite her own story with the advantage of hindsight.
One common theme is self - discovery. When Natsu goes back in time, he often learns more about himself, his powers, and his past. For example, he might find out things about his family or how he came to be who he is.
One common theme is redemption. Naruto often goes back in time to right the wrongs of the past, whether it's saving a fallen comrade or preventing a great disaster. Another theme is self - improvement. He uses the knowledge from his future self to become a better shinobi faster.
The theme of changing fate also frequently appears. Shirou going back in time means he has the opportunity to change the fate of his friends, his city, or even the whole world. He has to make decisions that could completely rewrite the future, and this struggle between his desire to change things and the potential consequences is often explored in these fanfictions.
One common theme is redemption. Ichigo might go back in time to fix his past mistakes, like not being able to save someone. Another theme is power - up. Since he has the knowledge of the future, he can train differently in the past and gain stronger powers. Also, relationship repair is a theme. He could go back to mend broken relationships with his friends or family.
Some common themes could be time travel adventures. Natsu might go back in time to prevent a disaster in the Fairy Tail world. Another theme could be self - discovery. As he travels back, he learns more about his past and his true potential.
One common theme is self - discovery. Sakura might go back in time and realize things about herself she never knew before. Another theme could be redemption. Maybe she has the chance to correct past mistakes. And love is often a theme too. She could fall in love with someone she didn't notice in her original timeline, or rekindle a past relationship in a new way.
The theme of identity is also common. When demigods go back in time, they may have to hide their true identities to fit in or face challenges because of their different nature. Also, there's often a sense of adventure. They are in a new, yet old, world and they have to navigate through different cultures and situations, which makes for an exciting read in fanfiction.
One common theme is redemption. Lucius, being a former Death Eater, often has a chance at redemption as he travels back in time with Harry. Another theme is the exploration of family history. They might discover things about their families that were previously unknown. For example, they could find out about old alliances or feuds.
One common theme is redemption. For example, Rey might go back in time to redeem a character who has fallen to the dark side. Another theme is the exploration of 'what if' scenarios. Like what if Rey changed a certain event in the past, how would it affect the future of the Star Wars universe.