Some great harem light novels include 'Rosario + Vampire'. It's about a human boy who enrolls in a school for monsters and gets involved with several female monster characters. 'Love Hina' is a classic, with a male protagonist living in an all - female dormitory, leading to many comical and romantic situations. Also, 'To Love - ru' has a harem - centered plot where the male lead is constantly in the middle of multiple female characters' affections.
One popular 'romance harem light novel' is 'The Quintessential Quintuplets'. It tells the story of a high - school student Futaro Uesugi who is hired as a tutor for five sisters. Another is 'Date A Live', which involves a boy named Shido Itsuka who has to go on dates with various spirit girls to save the world. And 'High School DxD' is also well - known. It features a perverted yet kind - hearted protagonist Issei Hyodo who gets involved in a world full of devils, angels, and fallen angels.
Another one is 'To Love - Ru'. The story revolves around a boy named Rito who accidentally gets engaged to an alien princess. It has lots of ecchi moments and a growing harem of girls around him. It's known for its comical and sometimes raunchy situations.
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.
One popular top harem light novel is 'Date A Live'. It features a male protagonist who has to deal with a group of female spirits in a harem - like situation. The story is filled with action, romance, and interesting character interactions.
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 could be 'Ouran High School Host Club' (though it's not overly smutty). It has a reverse harem setup where a girl is surrounded by a group of boys. Another might be 'Fruits Basket' which also has elements of a girl in a situation with multiple male characters, though again, not extremely smutty. There are also some lesser - known ones in the genre that are more on the adult - themed side but not widely recommended due to their inappropriate content.
One popular one is 'Ouran High School Host Club' light novel. It has a female protagonist in a harem - like situation with a group of male characters. The story is filled with comical and romantic elements.
One popular harem novel is 'The World of Otome Games is Tough for Mobs'. It has an interesting premise where the main character is in an otome game world but as a mob character, and he ends up with a harem of female characters around him. Another is 'High School DxD' which also features a male lead and a group of female characters in a harem - like situation. There's also 'Date A Live' where the protagonist has to deal with a harem of spirit girls.
A great example of a harem novel is 'In Another World With My Smartphone'. The main character is teleported to another world and soon finds himself in the company of several female companions. There are also harem elements in 'Overlord', where the main character, who is an undead overlord, has various female characters around him, and their relationships form a sort of harem - like dynamic.
One popular one might be 'DanMachi'. It features a young adventurer in a dungeon-filled fantasy world where he gradually forms relationships with multiple female characters, which has elements of a harem. Another could be 'In Another World with My Smartphone', where the protagonist also has a group of female companions in a fantasy setting, though not strictly dungeon - centered but has similar harem - like relationships.