The 'Backup Guy' Persona Has Collapsed [Quick Transmigration]

Cheng Muyun is a bamboo deity who enters a system to serve as a backup love interest to overcome a romantic tribulation. But he has no heart, and his role as a backup becomes wildly unchecked, causing one world after another to collapse. The planning team is furious. Cheng Muyun is thrown into a punitive world as a lovestruck fool for three years before regaining his memories. To leave, he must return to fix the collapsed worlds. With no choice, Cheng Muyun goes back to fill the holes he dug—for the protagonists and himself. At the bottom of those holes, the protagonists sharpen their knives, eagerly awaiting his return. *Once you're back, don't even think of running away.* **World 1: The Transmigrated Stand-in Returns to Clean Up** Cheng Muyun is a stand-in, the consolation prize for a CEO. What no one knows is that he’s a transmigrator with a secret: before crossing over, he had a deceased boyfriend who looked just like the CEO. The CEO says, *"When you smile, you don't look like him anymore."* So Cheng Muyun stops smiling. He also thinks the CEO resembles his boyfriend only in appearance—nothing else. But that's fine; he can just… *modify* the CEO. A perfect exchange. Then the CEO's white moonlight returns, Cheng Muyun's secret is exposed, and he flees—only to die in a plane crash, collapsing the world. Now, he’s forced to return and clean up the mess. **World 2: The Sickly Master Returns to Clean Up** Cheng Muyun is the taboo of the cultivation world. To obtain an innate dao body, he publicly gouged out his disciple’s chest and fell into demonic cultivation. Just as demonic forces flourished and the righteous path waned, he single-handedly slaughtered the Ten Demon Sovereigns before sacrificing himself. From that day on, his disciple began cultivating the path of severing emotions—and became a Sword Sovereign. *Sword Sovereign: "I don’t hate him, nor do I love him. I just never want to see him again."* *Cheng Muyun: "You’re the male lead of a harem novel. How can you sever emotions? Fine, if you don’t want to see me, I’ll just change shells and come back to clean up."* **World 3: The Gold-Digging Ex-Boyfriend’s Persona Collapses** Cheng Muyun is the reason a sweet romance’s gloomy, disabled tycoon is so gloomy—he abandoned the man at his lowest, only to demand reconciliation once the tycoon regained his status. Too bad the tycoon had already found a sunny new love to cherish. Undaunted, Cheng Muyun teams up with the tycoon’s nephew to seize his empire. After things go south, Cheng Muyun is imprisoned, escapes, dies—and the world collapses. Now he’s back to clean up, determined to play the perfect gold-digger and not lose control. Except this time, it’s the disabled tycoon who’s losing it. … **Guide:** 1V1, The top in every world is the same individual.