Ever since magic had been discovered, some Muggles had witnessed it done, in some cases by their own children, and they had told others about it.  In the past, this knowledge had been suppressed by memory charms, but now, thanks to the internet, it had spread so fast that all the Muggles now knew that magic existed.  Since most of the magic they saw or heard about since the taming of the Dark Lord was benign, the Muggles, with the exception of a few religious extremists, no longer feared it.  Magical people, and those Muggles suspected of being magical, were no longer persecuted.

When this information reached the magical community, the International Confederation of Wizards held a meeting to review the International Statute of Secrecy.  Those who wanted to keep that Statute argued that Muggles would ask us to use magic to solve their problems, but their opponents countered that we had done this in centuries past with no ill effects, and now the Muggles had something new to offer us in return: their scientific knowledge.  After some debate, the Statute was repealed and replaced by the Muggle Protection Act: magic was not to be used to harm Muggles or to cheat in Muggle competitions.

Carlotta Pinkstone, who was serving time in Azkaban for violating the International Statute of Secrecy, was released and led the campaign to reintegrate the magical and Muggle communities.  Quidditch became an extremely popular spectator sport for Muggles, and it inspired them to invent their own version of the game: they carried a broomstick between their legs while running around the pitch.  Hogwarts, Hogsmeade, Diagon Alley and Platform nine and three quarters in King's Cross Station became lucrative tourist attractions and provided employment for magical people as tour guides.  I put out a second edition of my book, in which I told the truth about my transfiguration into a bonobo, and the movie was remade accordingly.

Many Hogwarts graduates decided to take up occupations in the Muggle world.  Some Gryffindors became pop musicians, while others satisfied their thirst for adventure by becoming soldiers, circus performers, professional athletes, fire fighters or crime fighters.  One crime fighter, who, like the Dark Lord and Severus Snape, could fly without a broomstick, dressed up as Superman while on the job.  Most of the Hufflepuffs worked in health care, where they were greatly valued as Healers, or in childhood education.  One teacher became immensely popular with her pupils by giving them broomstick rides.  The Ravenclaws gravitated towards the sciences, in particular computer science, and the arts, in particular classical music.  One pianist wowed his audience by playing one part of a piano duet while bewitching the piano to play the other part, and one university professor livened up her lectures by demonstrating magic.  Some of the Slytherins amassed huge fortunes in banking, industry and real estate, while others satisfied their power lust by becoming politicians.  One of them captured the American White House on a Tea Party ticket; his policies made it easier for Muggles and wizards alike to make a lot of money and provoked a mass exodus of the newly dispossessed into Canada.

To be sure, a few of the Slytherins turned to the Dark Arts in the hope of becoming a successor to the Dark Lord, but with so many other opportunities, both in the magical and Muggle worlds, to satisfy power lust, and with blood status becoming a non-issue because of ever increasing intermarriage, they weren't able to recruit nearly enough followers to pose a serious threat.  The Department of Magical Law Enforcement became increasingly occupied with minor violations of the Muggle Protection Act such as cheating in Muggle sports.  Hermione, who had joined that Department after seeing to the betterment of the condition of House Elves and had risen to become its Head, now decided that her position could be entrusted to someone of lesser intelligence than herself; so, when she was offered the position of Arithmancy Professor at Hogwarts, she accepted it, and upon the retirement of the current Headmaster, she became Headmistress of Hogwarts.  Luna and I were now working under her command, something we had grown used to during our student days.

Now that we are retired, we can look back upon our lives, satisfied that we have helped to make the world a better place, something we were able to do partly because as students we worked hard at our lessons, and partly because we worked together as a loving couple.