There are several recurring themes. Adventure is a big one. Once transported, the protagonist embarks on a journey filled with unknowns, exploring new lands, and facing various challenges. Love or romance can also be a theme, where the main character might fall in love with a native of the fantasy world. And lastly, the theme of fate often plays a role, as if the character was meant to be in that world to fulfill a certain destiny.
One common theme is self - discovery. The main character, when transported to the fantasy world, often has to figure out who they really are away from their normal life. Another theme is power acquisition and growth. They might start as a weakling but gradually gain extraordinary powers. And friendship or camaraderie is also prevalent as they meet various characters in the fantasy world and form bonds with them.
One popular type of character is the wise old wizard. He often guides the protagonist in the new fantasy world, teaching them about magic and the ways of the land. Another is the brave knight - type character who might accompany the main character on their adventures. And there's often a female elf character, known for her beauty and archery skills.
A typical trope is the epic quest. In many transported to fantasy world stories, the hero is given a task or a quest that they must undertake. This could be to defeat an evil sorcerer or to find a magical artifact. Also, there's the idea of the chosen one. The character is somehow fated to be in the fantasy world and has a special destiny, like Harry Potter. He was the only one who could defeat Voldemort. Another common thing is the existence of magical creatures. From dragons to unicorns, these creatures add to the wonder and danger of the fantasy world.
One common theme is self - discovery. The hero, being in a new world, often has to figure out who they are in this different context. For example, they might discover new powers or abilities they didn't know they had. Another theme is the struggle against the unknown. In a new world, there are new rules, new enemies, and new cultures to understand.
One common trope is the sudden acquisition of special abilities. The protagonist, upon being transported to the game world, often gains unique powers that help them survive and thrive. Another is the encounter with various in - game races and forming alliances or rivalries. For example, they might meet elves, dwarves, or goblins. Also, there's usually a quest or a mission that the protagonist has to undertake, which drives the plot forward.
One common theme could be adventure. Since it's set in a labyrinth in a fantasy world, the characters are likely to embark on various adventures exploring the labyrinth. Another theme might be relationships, especially considering the 'harem' aspect, which usually involves complex relationships among multiple characters.
One common theme is self - discovery. The protagonist is often thrown into a new and strange world, and through their experiences there, they learn more about themselves. Another theme is power - growth. In the new world, they usually start from scratch and gradually gain power, whether it's magic or combat skills. And there is also the theme of forming relationships. They meet various characters in the new world and form friendships, alliances or even romances.
A prevalent theme is the exploration of new abilities. Since they are in a different world, the female characters usually have the opportunity to develop or discover abilities they didn't have before. For instance, in 'That Time I Got Reincarnated as a Slime', Shizu had unique abilities in the new world. Another theme is friendship. They form new friendships in the new world which help them in their journey. In 'The Saint's Magic Power is Omnipotent', the female lead makes friends who support her. Also, the theme of changing the world or making an impact is common. In 'Sword Art Online', Asuna makes an impact on the virtual world she is trapped in by fighting for the safety and freedom of others.
In 'a harem in a fantasy world dungeon light novel', the theme of mystery is common. The dungeon itself is full of mysteries - what lies in the deeper levels, what kind of creatures or treasures are there? Also, the theme of loyalty. The members of the harem may show loyalty to the main character in different situations. And finally, the theme of competition. There could be competition among the harem members for the main character's attention or for resources in the dungeon.
One common theme could be adventure. The fantasy world dungeon setting implies exploration and facing various challenges. Another theme might be relationship building within the harem. Characters in the harem may have different personalities and backstories, and the protagonist has to navigate these complex relationships. Also, power progression is likely a theme as the characters often need to grow stronger to survive in the dungeon and deal with any threats that come their way.
A really interesting one is 'Re:Zero − Starting Life in Another World'. It stands out for its complex plot and the unique concept of the main character dying and restarting from a certain point every time he fails. There are also emotional and character - development aspects that make it engaging.