[Streetwise tough guy + Mysterious Revival + Sacrifice + Gacha + Mastermind in the Shadows]
People knock on doors three times, ghosts knock four. Just because I threw a game of Monkey and screwed over my teammates, one of them sent me a bizarre note.
Oh, right. My name is Fang Jing. By the time you read this, I'll have become the protagonist.
When the weirdness revives, don't be afraid. Have you read the Classic of Mountains and Seas? It turns out that's actually a world of immortal cultivation.
Emperor Wu of Han's tomb opens wide, the Heavenly Dao collapses, and all rules vanish. I, Fang Jing, have only one thing to say: "I'm the protagonist, the coolest guy in this world."
A gentleman's revenge can wait ten years! When I return from cultivating immortality and encounter the Door-Knocking Ghost again, I just pull on my hood and shut out the world!
In an instant, I transform into Demon Lord Fang, lock the Door-Knocking Ghost in a dark room, and let it knock away.
[The early story leans toward mysterious revival; later, it goes straight into immortal heroes fighting monsters and leveling up, gacha, and stat boosts with Deep Blue.]