Well, the theme of survival is quite common. Since the characters are in a new and often dangerous world, they need to find ways to stay alive. In 'No Game No Life', Sora and Shiro have to win games to survive in the world they are summoned to. Another theme is the concept of heroism. Whether they like it or not, many of the summoned characters are thrust into the role of a hero, like in 'That Time I Got Reincarnated as a Slime' where Rimuru becomes a leader and a protector. And the theme of moral choices also exists. In 'The Rising of the Shield Hero', the protagonist has to make difficult moral decisions in the face of the unjust treatment he receives.
One common theme could be the exploration of a new and strange world. The protagonist often has to figure out the rules, cultures, and magic systems of the new world. Another theme might be self - discovery. As they face various challenges in this other world, they learn more about their own strengths and weaknesses.
One popular 'Summoned to Another World' light novel is 'That Time I Got Reincarnated as a Slime'. It follows the story of a man who is reincarnated as a slime in a fantasy world and builds his own nation. Another is 'Overlord', where a powerful player gets trapped in a game world. There's also 'No Game No Life' which features two siblings summoned to a world where everything is decided by games.
Power - up is a common theme. The main character is often weak at the start when summoned to the new world but gradually gains power through various means like training, finding unique items or learning magic. Another theme is harem. Many of these novels have the protagonist surrounded by multiple characters of the opposite sex who develop feelings for him. Also, building a new life or kingdom in the other world is a typical theme.
The character development in these light novels is often great. Protagonists usually start from being ordinary and then grow into powerful or influential figures in the new world. For example, in 'That Time I Got Reincarnated as a Slime', Rimuru starts as a weak slime but gradually becomes a respected leader. Also, the unique settings in these novels, like different magic systems and strange creatures, add to the appeal.
Power - up or growth is also a big theme. They start from being relatively weak or normal in their own world and then gain new abilities and knowledge in the other world. For example, in many such novels, the protagonist learns magic or combat skills they never had before. This growth is usually tied to their adventures and challenges in the new world.
One of the main themes is adaptation. The heroes are summoned from their normal lives to a completely different world, so they have to adapt to new cultures, magic systems, and social structures. Also, friendship and camaraderie are important themes. They often form teams or groups with other characters and rely on each other to overcome difficulties. In addition, the theme of power and its abuse or proper use is often explored as the heroes gain more and more power in the new world.
One common theme is the use of modern knowledge in a medieval or fantasy - like business setting. For example, the main character might introduce new farming techniques or manufacturing methods.
One common theme is self - discovery. The main characters are often thrust into a new world and they have to figure out who they are in this new context. For example, in 'Sword Art Online', Kirito not only has to survive in the virtual world but also discovers new aspects of his personality.
One popular 'summoned to another world' novel is 'Overlord'. In this story, a powerful gamer is transported into the game world he once played. Another is 'That Time I Got Reincarnated as a Slime'. The protagonist is reincarnated as a slime in a different world and gradually builds his own powerful nation. And 'Konosuba' is also well - known. It features a group of misfits who are summoned to a fantasy world and their comical adventures there.
One popular 'summoned to another world light novel' is 'That Time I Got Reincarnated as a Slime'. It follows the story of a man who is reincarnated as a slime in another world and gradually builds his own power and kingdom. Another great one is 'Overlord'. In this novel, a powerful gamer is transported into the game world he was playing, where he has to navigate a complex and often dangerous new reality with his overpowered character abilities. And 'No Game No Life' is also a good choice. Siblings are summoned to a world where everything is decided by games, and they use their extraordinary gaming skills to survive and thrive in this new world.