The Wizarding world was finally relieved of the biggest threat of the century, as Harry Potter had fulfilled the prophecy and killed the Dark Lord. The dead were buried, the left over Death Eaters were locked up, and people finally dared to celebrate.
However, a new prophecy was already registered at the Ministry of Magic, and it warned for a new threat, that would kill many in the Wizarding community. And that threat originated from the Muggle world, the non-magical population.
As with all prophecies, people tend to ignore them, and live their lives to the fullest. So did Harry Potter and Ginny Weasley, engaged to be married next year. They lived at 12 Grimmauld Place, in London, the house that Harry had inherited from Sirius Black, his Godfather. It no longer was dark and depressing, they had managed to really clean it up, getting rid of century old spells, as well as the portrait of Sirius's mother.
Harry's best friends, Ron Weasley and Hermione Granger, also engaged, to be married at the same day next year in a double wedding, temporarily lived here as well. Their own home was being rebuilt, in Godrics Hollow. It was Harry's old family home, which was heavily damaged by Lord Voldemort, who killed Harry's parents, when Harry was just a baby. He had given it to them as an engagement present, as he knew he'd never live there again.
Harry was well on his way to becoming an Auror, something he had always dreamed of. He had gotten rid of the greatest criminal of their time, so that looked pretty good on his resume. Ginny actually made it to a professional Quidditch team, she was a proud member of the Dartmoor Dazzlers. Ron got his own fame, as a Wizarding Network Personality, having two daily shows, one very popular with the female listeners. And Hermione, who at very young age got the House Elf Fairness Act passed, was recruited by the Unspeakables, a secret agency within the Ministry of Magic, with a simple motto: Think outside the box.
She was the first one to learn of a disease that scared the muggles, as she still read their newspaper. She was also the first to recognize that wizards who had gone sick, must have been affected by the same muggle disease. The effects were drastically different though, where muggles got breathing problems and some even died, the affected wizards had a sneezing fit, that lasted so long that the wizard lost his ability to perform magic.
Technically these wizards became Squibs overnight, as a person was called who was born in a Wizarding family, but without any magical ability. Losing your magic is like losing both your legs or arms, or even worse, your will to live.
There was a very weird distinction though, as this virus, that the muggles named after one of their beers, only seemed to affect wizards and not even one witch.
The unspeakables experimented with a combination of regular, dark and blood magic. And they found a combination that seemed promising, though there was a huge price. Hermione however "volunteered" as the newest member, to try the potion out on her fiancée.
She knew that Ron liked her dressed up with her hair all flat and controlled. And that's how she waited for him, with his favorite dinner and a nice bottle of wine. Ron suspected a trap, but he loved her too much to not go along with her. Tipsy and horny they ended up in bed and Ron did not know at that time that he fathered his first child. It wasn't enough for Hermione though, she pumped him for two more times, and used a containing spell to secure his sperm for a later time.
Ron was exhausted and needed a recovery potion, and Hermione gave him a good dose of her Anti-Corona Elixir, which she had marked as ACE. The effects were fast, although Ron hardly noticed what happened. It was like polyjuice potion, except Ron was shaped after a combination of perhaps thirty witches, whom all had provided blood for the ACE potion. And unlike polyjuice, thanks to a very dark spell, the changes were irreversible. When Ron woke up, he was now a woman, a witch, as he, no she, had not lost her magical abilities.
Hermione's cat Crookshanks was unfortunately infected by the virus, but she exposed him to Ron, now Rhonda. Where Ron could never get along with the big cat, Rhonda nurtured him back to life, with many hugs and very close contact. Rhonda never got sick and that was promising.
There were some side effects though, the most urgent one making Rhonda, who was actually quite pretty, also as horny as a bitch in heat. And the only man left in the house was Harry. Harry, who had understood that his future was also as a witch and not a wizard, had gotten Ginny already pregnant, and also provided for enough sperm for the large family that Ginny wanted. Although satisfied with that accomplishment, he was no match for the sexy Rhonda, and she milked him for all that he was worth. After a few days her heat was finally over, and as a result Rhonda was the third pregnant woman in the household.
The unspeakables worked on a variation of the potion, to deal with the animal like side effect, and a solution was found by using the blood of more docile witches and, by accident, one house elf. Harry was the first to try out the ACE2 potion, and he turned into a very pretty woman, but not overly horny, like Rhonda.
Harry, now Heather, showed an almost opposite behavior of the sexy Rhonda, who dressed very provocative, and became even more popular on the Wizarding Network shows, and even as a game host on Muggle TV. Heather felt most comfortable in a maid's uniform with an urgent desire to serve the three pregnant women in her life. Together with Kreacher, the old house elf, they took care of the home and prepared a nursery for the upcoming babies.
Unfortunately there was no future for Heather and Ginny. Perhaps they could overlook the fact that both were women now, but Ginny had loved the dangerous side of Harry and the submissive nature of Heather was not attractive to her. Unlike the wild orgies between Hermione and Rhonda, that Ginny participated in regularly.
Heather soon slept in her own room in the servants area. Which doesn't mean she spent her time alone, as she could not resist Kreacher's advances towards her. And thanks to the elf blood in the ACE potion Heather found herself soon pregnant as well.
At least thanks to that aspect, the unspeakables realized the mistake in ACE2, and ACE3 essentially saved the Wizarding world. Many wizards, now witches, kept their regular jobs. The few that chose not to take the potion, lost eventually their magical powers and with that their jobs. Many were incapable of living like Muggles and they would give up, though some would try ACE3 afterwards and although turned into women, they did not regain their magic, and most ended up in the Muggle sex industry.
Like our four friends, most of the original witches ended up pregnant, through the last male deed before their spouses took the potion. And although this caused a baby boom in the Wizarding world, only the female newborns turned out to have magical powers. And transformed witches that managed to get pregnant still, only produced female offspring.
Long term it was clear that the magical community would eventually perish, unless witches would mate with Squibs and Muggle males. This was actually easier for the transformed witches, as they were all apparently irresistible to Muggles. So, slowly the Muggle and Wizarding worlds merged, effectively dissolving the International Statute of Wizarding Secrecy from 1692.
Interestingly enough, the ACE3 potion also worked on Muggle men, although they would never gain magical powers. But the potion was 100% effective, much better than the Muggle vaccines, against all different variants of the virus, and even on people already infected, often fighting for their lives. Becoming an healthy, attractive woman was a small price to pay, compared to death, and for some reason people seemed to trust magic more than their own vaccines.
That trust took a huge toll when a criminal wizard named Mundungus "Dung" Fletcher got his hands on an illegal batch of ACE2 potion. Dung and his Muggle partner in crime were not aware it was not the ACE3 potion, and when Dung got infected and his sneezing fit started, his partner gave him the potion, before he'd lose his magic.
The Muggle partner, named Jack the Rapper, was pleasantly surprised, when his ugly Wizard buddy turned into an attractive maid named Dunnie, with the only desire to serve and please Jack. It didn't take long to find out that the effect was the same on Muggle men, except they did not have the magic that Dunnie had. Jack used her magic to trap thousands of men into a life of servitude, selling them for enormous amounts of money to rich families.
Things went downhill when Jack got his hands on a small batch of the original ACE1 potion. Soon the internet was controlled by a large group of sexy horny women, who would do anything to get laid, and most often in the form of a very dominant mistress.
A side effect of the ACE potion, all three versions of them, did not get identified until years later, and by then it was too late to turn it around. At first it was thought that the ACE1 mistresses had some mental control over their clients, but in the end the only conclusion was, that once a man had sex with an ACE woman, as they were now called, he would be incapable with any other woman but her. They would pay dearly to the one woman with whom they still could get it up. Be that the Mistress, the Maid, or the regular ACE3 woman.
And slowly, over a period of seven years, these men would adopt more and more features of their woman, starting to dress like them, act like them, and eventually even physically become like them. Masters of their rich family, screwing around with the Maid, they eventually turned into a Maid themselves, with the only desire to serve their own family. Soon to be followed by their sons, who often had their first sexual experience with their willing maid.
Likewise, submissive men, who'd do anything to have sex with their Mistress, would eventually end up as a dominant woman themselves, with their own group of sub men, owning their own piece of the sex industry.
Jack, who had quickly become one of the richest people in the world, having fathered multiple daughters with Dunnie, ended up as the sexy maid to an Arab business partner, who took all her money as well as her virginity, and thus sealing his own future of servitude to a Royal Sheikh some years later.
I will leave the math to others, but in a world where an innocent hump with the Maid will seal your female future, where a hookup with a dominant Mistress will seal your female future, where men are kidnapped on the street and forced to have sex with either Maid or Mistress, to seal their female future, this world will real quickly run out of men. And although Corona was beaten by ACE, the new world order is changing as rapidly as said virus. At least it happens while we're having fun...