I unfortunately do not write fanfictions, I come up with Ideas and other things along those lines. Anyways, I am posting my ideas here to see if any of you skilled AFF Writers may like to use the ideas or rewrite them entirely to serve your purpose.
Idea #1: Harry Potter, Sex God?
This is an AU Harem Type Story
What if Harry's Uncle died in an accident when he was only six years old and a bloodline curse/blessing activated thus causing Harry to subconsciously bleed out a sexual aura, this aura effects his Aunt Petunia and his cousin, Rosalina by entrancing them to have sex with him. This curse/blessing also emincipates Harry and allows him access to the Potter vaults, this allows for him, his aunt and cousin to live well without leaving their home while participating in sexual activites all the while. So about five years later when Harry recieves his letter he is more than ready to go, however it would appear that his cursed/blessed aura has a slight side affect on his relatives causing them to constantly require his aura's feel. As such they travel with Harry, in an expanding trunk / apartment fully outfitted for their usage. How will the girls and women of Hogwarts deal with a Boy whose aura makes all members of the opposite sex extremely aroused? But what if Hogwarts also had an entire OWL and NEWT tested course on the subject of Sex; where male students were taught to have sex with female partners, where female student were taught to please their male counterparts, where Hermaphrodites were expected to attend bother areas of the class, and where the whole thing was mandatory. What if the sight of sex in the coridors of Hogwarts was a common sight, where female students were often seen mounting teachers, creatures and anything they could. What if Harry's Aura made it increasingly difficult for female students and teachers to concentrate on not being forced into a state of sexual hyperactivity?
This idea also features a Hogwarts where 95% of it's students are female (All of the first year students in their year except Harry, Nevile, and Blaise are female) and of that 95% there are several Hermaphrodites Students (Hermione Granger, Susan Bones, and Hannah Abbott are the First year Hermaphrodites).
Like in Idea #3 this version of the magical world allows for the few male to take Harems but it also allows for Hermaphrodites to allow take Harems in order to boost the male birth rate, so if this story is adapted I would expect at least one large sized harem. Also when I first envisioned this idea, I thought of making Voldemort, Remus, Sirius, Snape, and Lucius (with Narcissa being the Hermaphrodite of their relationship) all females
Idea #2: The Potter Family Succubus
This one is a Female Harry Potter Story
She was the last of the Potter Family, however it would seem that she had inhierited a old blood trait of a magical species long extinct; The Succubus. She had all the abilities and skills that would come naturally to a succubus but she recieved something else, everytime she had sex with a being of magical descent or origin her core would increase by a certain percenage depending on the amount of 'seed' she received and the magical core of her 'seed' donor but it would also seem that her magic also kept her from being impregnated all the while. The fact her body developed much faster than most would believe physically possible* and her near constant state of arousal, kept her from really being normal. As for her sexual preference, she really didn't care what gender or what species for that matter. Now how will Hogwarts deal with a Succubus Potter? What House does this Potter wind up in?
* By that I mean at the age of 11 she would have a breast size along with body curves that would make the majority of the fifth year girls insecure and very jealous
This Idea has no official pairings but I will say this much though, this Potter will mount anything or anyone if she feels the need to great to ignore. So scenes like; Fem!Harry x Fang. Fem!Harry x Fluffy. Fem!Harry x Centaur. Fem!Harry x Teacher. Fem!Harry x Older Student. Fem!Harry x Voldemort. Would all be common and normal, for this idea
Idea #3: Weasley Twins; Reborn in the Past
This idea is an old one I came up with a year ago, it is Fred Weasley and George Weasley centric.
After an accident involving the twins using a Time Turner brought off of Mundungus Fletcher, their bodies are killed while their souls and magical cores are sent to the past. The avatar represention of Magic itself interfers and redirects the twins into new bodies, this action changes the timeline entirely (along with the genders of many characters destined to be male). The Twins are reborn to a neutral pureblooded family and attend Hogwarts in the same year as the Marauders. However there was one slight problem with the Marauders; Peter Pettigrew, Remus Lupin, and James Potter are all female. This chages the future entirely and officially erases Harry Potter from existance, but thats not all it seems though that the vast majority of the male death eaters that should be in this time period are now female. How will the future fare now?
Anyways the following characters have Harems
Sirius Black = Griffindor Based Harem
Fred Weasley = Slytherin Based Harem
George Weasley = Slytherin Based Harem
This story is one where there are three major Harem Groups. In this reality I pictured that there would be only a scarse few male characters in Hogwarts while the rest female (I'm thinking Ten Witches for every One Wizard) and in this reality wizards are permitted to take Harems so long as a several male hiers are born, this reality is more concerned with there not being enough male wizards rather than the large number a muggleborns
More will be added