The world has become a raunchy urban fantasy and you are the 'protagonist'

As the light engulfed the world, the rules of nature and reality itself fundamentally changed. The world is no longer based on science and logic, but on magic and myth. Many people have been transformed into members of various fantasy races, gods and magic are very much real, and many people can harness these powers for themselves. The very earth itself has shifted and is now unrecognizable to you; the planet itself is much larger, filled with strange continents and bearing many thousands of years of magical history.

Most of your surroundings are still familiar to you; technology hasn't changed, its inner workings now simply magical in nature. The locations you know and love and the people you remember are all still here, now just fundamentally changed. Besides you, though, no one remembers things ever being any different.

And of course, the world is now extremely sexual, like a satirical fantasy porno.

Most of all, you are now special. In some way, the universe now centers around you, as if you are the protagonist in the aforementioned porn.