A major theme is adaptation. Since the characters are reincarnated into a different world, they need to adapt to new rules, cultures, and environments. In 'Overlord', Ainz has to adapt to the new world which is different from the game world he knew. Another common theme is the exploration of morality. Some protagonists face moral dilemmas as they gain power. For instance, in 'The Rising of the Shield Hero', the hero is wrongly accused and has to decide how to deal with the people who wronged him while still maintaining his own moral code. And of course, the theme of the journey is always there. The characters are on a journey, whether it's to find a way back home or to achieve a certain goal in the new world.
The theme of redemption can be seen in some reincarnation light novels. Characters may have regrets from their past life and try to make up for them in their new life. In 'Isekai wa Smartphone to Tomo ni.', Touya uses his new life to help others and make a positive impact, which could be seen as a form of redemption. Another theme is the exploration of different cultures. When reincarnated into a new world, the characters are exposed to new cultures, magic systems, and social hierarchies. This is evident in many of these novels, like 'KonoSuba: God's Blessing on This Wonderful World!', where Kazuma has to learn about the various races and their cultures in the fantasy world.
One common theme is self - discovery. Protagonists often have to figure out who they are in this new reincarnated form and what their purpose is. For example, in 'That Time I Got Reincarnated as a Slime', Rimuru has to learn about his new slime abilities and how he can use them to his advantage. Another theme is power - building. The characters usually start from a weak state and gradually gain strength. In 'Re:Zero', Subaru has to keep trying different things to become more powerful and change his fate. Also, the theme of building relationships is present. In these novels, the protagonists form alliances, make friends, or even find love in the new world they are reincarnated into.
One common theme is self - discovery. When the protagonist is reincarnated, they often have to figure out their new identity and abilities. For example, in 'That Time I Got Reincarnated as a Slime', Rimuru has to learn about his slime powers and how to use them in this new world. Another theme is power - building. The reincarnated character usually starts from a weak state and gradually becomes stronger, like in 'The Rising of the Shield Hero' where the Shield Hero has to build his reputation and strength after being wronged. Also, many reincarnation light novels have the theme of friendship or comradeship. Characters form bonds with others in the new world, as seen in 'Konosuba' where the main character and his party members grow closer through their adventures.
Well, a typical theme is adaptation. Reincarnated characters need to adapt to new rules, cultures, and abilities in the new world. In 'Reincarnated as a Sword', the sword has to adapt to being an inanimate object with a consciousness. Redemption is also a theme sometimes. If the character had a bad past life, they might strive for redemption in the new one, which can be intertwined with romance. And the theme of fate is common. Characters often try to break free from the fate they had in their previous life or fulfill a new - found destiny, all while experiencing new romantic relationships.
One common theme is self - improvement. The female protagonists often start from a disadvantaged position in their new lives and strive to better themselves, like learning new skills or magic. For example, in many novels they have to quickly adapt to a new world with different rules.
Common themes include adaptation. The characters have to adapt to a new world with different rules and social structures. Redemption can also be a theme. For example, if the character was a villain in their past life or in the game world, they might seek redemption. And of course, power - gaining. The protagonists usually gain some sort of power or skill during their reincarnation journey, which helps them in their new life.
One common theme is self - discovery. When a girl is reincarnated, she often has to figure out who she is in this new world and what her purpose is. For example, in 'My Next Life as a Villainess', the main character has to re - evaluate her role as a villainess and discovers new aspects of herself as she tries to change her fate.
One theme is the concept of karma. In these novels, the actions in one reincarnation or stage of cultivation can affect the next. Also, the theme of power - up is common. As the character reincarnates or progresses in cultivation, they gain more and more power. For example, in many novels, the character might start as a weak mortal and gradually become a powerful immortal through multiple reincarnation - related events. And there's often the theme of redemption or self - improvement, where the character tries to correct past mistakes in their new reincarnation or cultivation stage.
One common theme is self - discovery. Since the characters are reincarnated, they often have to figure out who they are in this new life. For example, in 'My Next Life as a Villainess', the protagonist has to redefine herself in the world of the otome game she's now a part of. Another theme is the power of love across lifetimes. The romances in these novels often transcend the boundaries of the characters' previous lives. In 'Ascendance of a Bookworm', the main character's love for books and the people she meets in her new life are intertwined.
Power acquisition is a common theme. When a dragon reincarnates as a human, they often start from a relatively weak human form and gradually regain their former power or develop new and unique powers. For example, in many such stories, the reincarnated character discovers they have hidden strength within them that is related to their dragon past.
One common theme is starting anew. The characters are often given a second chance at life in a different world, and they can use this opportunity to rewrite their destinies. For example, in 'That Time I Got Reincarnated as a Slime', the protagonist can build a new life and society as a slime. Another theme is power acquisition. Reincarnated characters usually gain new abilities or powers in their new forms, which they use to navigate the challenges of the new world.
Survival is a very common theme. Since the character is reincarnated as a monster, they often have to fight against other creatures or humans who see them as threats. For example, in 'So I'm a Spider, So What?', the spider has to constantly find food and avoid being killed.