One popular harem isekai light novel is 'In Another World with My Smartphone'. The protagonist is transported to a fantasy world with his smartphone and soon finds himself surrounded by various female characters. Another is 'Overlord', where the main character, Momonga, is trapped in a game world and has interactions with different female npcs that could be considered part of a harem - like situation. And 'The Rising of the Shield Hero' also has elements of harem isekai, with the main character, Naofumi, gradually gathering a group of female companions during his adventures in the isekai world.
One popular one is 'The Rising of the Shield Hero'. It features a unique isekai setting where the protagonist is summoned to another world as the Shield Hero, and gradually forms a harem of diverse characters throughout his adventures.
The escapism. People like to be transported to another world (isekai part) and experience a new and exciting adventure. The harem aspect adds a romantic and sometimes comical element. Having a group of characters of the opposite sex attracted to the protagonist makes for interesting relationship dynamics.
Well, 'Konosuba: God's Blessing on this Wonderful World!' is a must - mention. Kazuma is reincarnated in a fantasy world and teams up with a group of misfits, including some female characters who form a sort of harem around him. It's known for its humor and unique take on the isekai genre with harem elements.
It's difficult to determine its popularity. Some light novels in the isekai and harem genres become very popular due to their unique storylines, characters, or marketing. However, without any specific data on sales, reviews, or fan communities, we can't really say if 'isekai meikyuu de harem o light novel' is popular.
It's difficult to say whether 'isekai meikyuu de harem wo light novel' is popular. While the isekai genre as a whole has a large following, not all titles within it gain widespread popularity. The concept of a harem and a maze in an isekai world might appeal to some fans of the genre, but it also depends on how well the story is written, the character development, and the marketing of the novel.
One popular one could be 'That Time I Got Reincarnated as a Slime'. It has elements of isekai and also develops a sort of harem-like situation around the main character Rimuru. Another might be 'Overlord', where the protagonist Momonga finds himself in a new world and has various female characters around him that could be seen in a harem - like context in a way.
Well, 'The Rising of the Shield Hero' can be considered. The protagonist is summoned to another world, which is a typical isekai tensei situation. And he has a group of female companions who support him in different ways, which gives it some harem - like vibes. Also, 'Konosuba: God's Blessing on This Wonderful World!' is very popular. The main character is sent to a fantasy world (isekai) and he has a group of girls around him, which is a classic harem setup in light novels.
If you're new to isekai harem light novels, start with 'No Game No Life'. It has an interesting concept and the harem aspect is more about the relationships based on the game - playing. 'High School DxD' is also a popular choice, but it has some more mature themes, so be aware. However, the story is exciting and the harem is a big part of the plot.
One popular title could be 'In Another World's Labyrinth, My Harem Awaits'.
The appeal of harem isekai light novels lies in the escapism they offer. Readers can immerse themselves in a fantasy world where the protagonist often has a special power or ability. The harem aspect adds an element of romance and relationship building. For example, in 'In Another World with My Smartphone', the protagonist's ability to use his smartphone in a medieval - like world is cool, and his interactions with the female characters are fun to follow.