Where's the Promised Sick Man [Quickly Wear]

(This article has opened paragraph comments, there is no limit~ Welcome everyone to comment~ Let's create a good reading environment together~) [The full text has been completed~Thank you everyone for supporting the original version! The new article "Passenger He Just Wants to Be Air [Quick Travel]" has been published! Check the column for details ~ qwq] Wen Yu, who is terminally ill and has been isolated since childhood, was inexplicably bound to a system when he was about to die. His mission is to travel through and repair the small world, save the Son of Destiny, and change the world line. Because his soul power was very weak, the system looked at the boy who looked pale even in space and felt that he would not live long. He took a look at the life of the host who had been imprisoned for eighteen years, and then took a look at the host's soul power that was about to be extinguished in the next second. The system sighed: Forget it, in the worst case, I'll replace him. Later, the system watched the host vomit blood while stepping on the Son of Destiny and a bunch of cannon fodder, and walked out of a new world line. The young man looked at the child of destiny, lowered his eyes and smiled: I'm sorry, I didn't die. System: You promised to live for a short time, but you have no common sense and don't understand anything? ! Many years later, when other small systems talk about the deeds of that adult, they will ask the old man how he chose that adult among billions of worlds. Old-timer: ... It's hard to say. At that time, I just picked randomly, and unexpectedly I won. —— Completed* World 1: The useless vase brother in the novel of a wealthy family World 2: Injured and retired captain of an e-sports team World Three: Orphanage Rules and Strange Tales World World 4: The magical world becomes a crippling natural disaster World Five: The Weak Elf King of the Interstellar World ×Note: All settings in this article are fictitious and should not be substituted into reality~ Concept: Everyone is the protagonist of their own life