What! Am I Not the Protagonist?

"Hello, you can watch it for me in the summer." After saying that, he gave his eyes to an unconscious young man. The young man seemed to have noticed something, and a hoarse voice came from behind. "Forget it, let me help you one last time. Then my drama should come to an end. I hope you won't cry because you can't find me when you wake up. Don't worry, we should meet again in the future. The four protagonists are named Jiang Xiaobai first. The original world where 1 is located is similar to the one we are in now The second is the future, the third is ancient times, and the fourth is the rebirth of the original world. Each of the four of them came to this world from their original world, separated by something similar to a barrier. These four stars need to merge and give birth to a new one. At that time, the world will face a big reshuffle. When the four people's main task in the later stage is to separate the four planets. To add, in the world I wrote, four people traveled through it. This world, the world where the four people originally lived is called world A.