What are some popular 'Harry Potter large harem fanfiction' stories?

One popular story could be 'The Chosen One's Harem'. In this fic, Harry Potter, with his god - like abilities, attracts a group of unique characters to form his harem. It often has elements of adventure and magic intertwined with the relationships.

One popular one might be 'The Slytherin's New World' where the main character finds themselves in a world full of Slytherin characters and forms unique relationships. It has an interesting plot that delves into the Slytherin house's more complex aspects.

One popular 'Harry Potter Harem King Fanfiction' is 'The Harem Potter'. It features an interesting take on Harry having multiple relationships in a way that still fits within the magical world of Hogwarts. Another could be 'Potter's Harem Quest' where Harry embarks on a journey that leads to him building a sort of harem around him, often with different female characters from the original series.

One popular one might be 'The Unlikely Bonds in Hogwarts'. It explores unique relationships among the characters that are not in the original series. Another could be 'Harem of Secrets', which delves into the complex web of relationships within the magical world of Harry Potter. And 'Slash Alliances at Hogwarts' also has a following as it presents interesting takes on the characters' interactions.

There's 'Harry Potter and His Harem of Enchantresses'. In this fic, Harry is sort of a magnet for strong female witches. The story weaves in elements from the original books like the Triwizard Tournament but with his harem members being key players in his success and protection.

One popular story could be 'The Gamer's Adventure in Hogwarts Harem'. It often features the main character using gamer-like skills in the magical world of Harry Potter and having various interactions with a harem of characters. Another might be 'Hogwarts Gamer and His Harem', which focuses on how the gamer element changes the traditional Hogwarts experience with a harem aspect added in.

I'm not aware of any specific popular 'Harry Potter' BDSM harem fanfiction as this is a rather niche and often inappropriate combination. 'Harry Potter' is mainly known for its magic, friendship and adventure themes in the mainstream, and such fanfiction goes against the original spirit of the work.

There's also 'Harry and His Enigmatic Harem'. In this fanfiction, Harry has a harem that includes some lesser - known but very powerful witches. These witches come from different backgrounds and magical traditions, which adds an interesting twist to the story as they introduce Harry to new forms of magic.

One popular story could be 'The Magical Harem of Harry Potter'. It often involves unique plot twists where Harry is surrounded by multiple characters in a harem - like situation. However, such fanfictions are not always considered canon - compliant.

Some of these fanfictions might center around the Hogwarts School but with a twist of the harem element. For instance, new clubs or activities are introduced where the harem relationships start to form. The fanfiction could delve into how the strict Hogwarts rules are bent or adjusted to accommodate these new relationship dynamics, all while still maintaining the magical essence of the Harry Potter world.