ALL THE ROAD LEAD TO DOOM

How would you feel when you were faced with the knowledge that multiverses exist? that it wasn’t only fiction, and reality was similar to a computer variable with countless parameters. Amazed? Scared? Relieved? Or feeling lost that we are just a speck of dust in vast countless layers of the multiverse that could be reset by some almighty being?

And then someone from that higher dimension told you that you are the trigger that will bring the end of the world as long as you have a happy life, then that someone normally tried to kill you, but this time, they wanted to give you a chance so they didn't need to keep killing you over and over again in other timeline or multiverse. The catch is they turn your life into a simulation, to seek a way to make your life not so miserable but also not let you lead a happy life as their goal.

Now, who are you?