[System] + [Doppelgangers] + [Semi-invincible] + [the Myriad Worlds] + [Behind the scenes]
The good news: from the start, you have doppelgangers across the Myriad Worlds, and they have a System. The bad news: you're one of those doppelgangers.
Even better, your true self has already reached the highest realm and brought countless worldlines into alignment.
Through misfortune, the doppelgangers gained consciousness of their own. Eighteen years after each one is born, they can also receive a beginner's gift pack and obtain a System of their own!
Your name is Xia Ji. You were born in the City of Beginnings and chose to become one of countless traders.
In this age when no one has yet become an emperor, you will take that crucial first step!
As the first comment, is it okay to ask the author to reply?