I don't think it's a popular light novel. Firstly, the title itself gives off a rather uncomfortable vibe with the'slave' part. Secondly, in the current literary market, light novels that focus on healthy relationships, interesting plots other than just harems, and strong character development tend to be more successful. So this one might not gain much popularity.
One popular 'slave harem light novel' could be 'How a Realist Hero Rebuilt the Kingdom'. It has elements of a harem where the main character has multiple female characters around him. Another might be 'Overlord', where the main character also has a group of followers that could be seen in a harem - like context. And 'The Rising of the Shield Hero' has a harem - like situation develop around the main character as well.
Well, the 'slave harem labyrinth light novel' could potentially revolve around a protagonist who finds himself in a labyrinth filled with slaves. Maybe he has to navigate through various challenges, both physical and social, within this unique harem - like environment. There could be political intrigue, battles, and of course, romantic interests as is common in harem - themed stories.
One common theme is power dynamics. In a slave harem setup, the main character often has some form of power or ability that attracts the other characters. For example, in 'The Rising of the Shield Hero', the protagonist's unique skills make others, especially the female characters, gather around him. Another theme is relationship building. The main character has to navigate complex relationships with the members of the harem. In 'Date A Live', the protagonist has to understand and bond with the different female spirits.
The 'slave harem in the labyrinth light novel' might tell a story full of intrigue. The labyrinth could be a central location that holds many secrets and challenges. The slaves in the harem may have different backgrounds and personalities. They could be with the main character for various reasons, such as being rescued from the labyrinth or being part of some strange system within it. The story may revolve around the main character's journey through the labyrinth while dealing with the relationships within the harem and the external threats present in that strange world.
One possible theme could be self - discovery. The main character, who has made this slave harem, might start to question his own values and beliefs as he interacts more with the characters in the harem. Also, a theme of cultural differences could be there. If the harem consists of characters from different backgrounds, their different cultures could play a role in the story.
Well, first off, the theme of discovery is important. The labyrinth holds many secrets, and the characters are on a journey of discovery. Then there's the theme of social hierarchy. With the concept of a slave harem, there are clear power dynamics and social hierarchies at play. And finally, the theme of personal development. The protagonist has to grow not only in terms of strength but also in terms of his ability to handle the complex relationships within the harem, all while navigating the challenges of the labyrinth.
In chapter 1, the main character might find themselves introduced to the mysterious world of the labyrinth and encounter some initial challenges or characters related to the slave harem.
I don't know for sure. It could be the owner of the slave harem who is likely to be a central character. Maybe there are also some key slaves within the harem that play important roles.
You might be able to find it in some specialized light novel stores. They often carry a wide variety of light novels.
One similar light novel could be 'In Another World with My Smartphone'. It also has elements of a protagonist in a different world with various interactions and relationships. Another one might be 'Overlord', which features a powerful main character in a fantasy world with his own 'followers' of sorts. And 'Konosuba' is also a good choice as it has a comical take on the isekai genre with a group of misfits adventuring together.