Who knows when it began: twisted horns appearing and disappearing in the shadows, bats swirling beneath a blood moon, a huge, distorted shadow drifting across the sea, vines silently winding around people's limbs in dense jungles... Strange events appeared online, but people didn't pay them much attention.
Later came ghosts roaming an ancient city on the fifteenth night of the seventh lunar month, a pyramid appearing out of nowhere in the desert, hymns mysteriously echoing through thousands of churches, plants encircling an entire city overnight, and a long, distant dragon's roar in the sky... Only then did people realize something was wrong.
Finally, after joint announcements from countries around the world, continents suddenly expanded and colliding worlds sank into one another. Humanity realized the world had changed.
In the East: a white-haired, golden-eyed Walker of Heaven who calculates everything without error; an Immortal Venerable whose sword can make the sky collapse; an ancient-history demon consort of peerless grace; a Buddhist disciple free of worldly attachments; a Jiuli goddess with the bloodline of an ancient shaman; and a drought demon capable of leaving thousands of miles barren... In the West: a holy and majestic six-winged angel; a decadent, enchanting witch; a mysterious, beautiful sea spirit; a capricious demon; a Reaper who harvests souls; and a nightmare that feeds in the dark...
Things thought not to exist appeared one by one.
The Three Immortal Isles, led by Penglai; the Kunlun Sect atop Cang Mountain; the demon realm hidden deep within the Qinling Mountains... The Ark Association, the Arcane Tower Academy, the Red Dragon Knights, the Church of the Seven Deadly Sins...
Organizations no one had ever heard of suddenly appeared before everyone's eyes.
End of the serious version
Ji Yuan had a strange dream. In it, following the instructions of a little white blob, she... created a person.
It felt like customizing a character in a game, but also somehow different. She couldn't remember the details.
But the next day, when she saw a stunning white-haired beauty lying in her bed, exactly like the one in her dream, she was completely dumbfounded.
Had the golden finger she'd been waiting for ever since she transmigrated eighteen years ago finally arrived?
Then why were the requirements for creating a character's background more demanding than writing a thesis?!
End of the silly version
Note: No CP. The protagonist actually has no gender. The author's habit is to make the protagonist's true form female, but in the story, other people sometimes speculate about the protagonist's secret identities, develop one-sided crushes, or invent a backstory for them. The secret identities have a degree of self-awareness.
Don't associate the countries in the setting or the worldbuilding with the real world. This is a different world. Most mythological figures won't appear directly. The story may focus more on Huaguo because the author knows its culture better.
The protagonist's soul comes from another world, and they're no ordinary person.
Theme: You don't have to be only one thing.