Where's the Sickly Weakling You Promised? [Quick Transmigration]

(This novel now has no restrictions on paragraph comments. Everyone is welcome to leave comments and help create a great reading environment!) [The novel is complete. Thank you all for supporting the official release! My new novel, The Passerby Only Wants to Be Background Noise [Quick Transmigration], is now out! Check my profile for details! qwq] Terminally ill and isolated from childhood, Wen Yu was inexplicably bound to a System on the verge of death. His mission was to transmigrate into small worlds, repair them, save their chosen ones, and change the course of events. With his soul power so weak, the System looked at the pale young man, who looked ghostly even inside the System's space, and couldn't help thinking he wouldn't last long. It looked at its Host's life story: locked up for eighteen years. Then it looked at his soul power, which seemed about to go out at any moment. The System sighed. Fine. At worst, it could just find someone else. Later, the System watched its Host spit blood as he trampled the chosen one and a crowd of cannon fodder underfoot, carving out a new path for the world. The young man looked at the chosen one, lowered his eyes, and smiled. "Sorry. I didn't die after all." System: Weren't you supposed to be short-lived, clueless, and ignorant of everything?! Many years later, whenever other little Systems talked about that great lord's exploits, they would ask the old senior how he had managed to pick that great lord out of tens of billions of worlds. The old senior: ...That's hard to say. I just picked at random back then. I never expected to win so spectacularly. Complete* World One: The Useless Vase Brother in a Wealthy Family Novel World Two: An Injured, Retired Captain of an Esports Team World Three: An Orphanage in a Rules-Horror World World Four: A Disabled Disaster in a Magical World World Five: A Frail Elf King in a Sci-Fi World ×Note: Everything in this novel is fictional. Please don't take it as a reflection of reality! Theme: Everyone is the protagonist of their own life.