Yu Qing lost his life due to a man-made accident. I thought I wouldn't survive, but it turned out to be a blessing in disguise and I was bound to the system. He entered various worlds to do tasks, and the system told him that if he wanted to go back to the original world for revenge, he had to do the tasks well, that is, to protect the male protagonist, become his support, and then betray him and let him grow!
Due to playing someone else for a long time, Yu Qing lost his basic emotions, but he seemed to enjoy it and continued to support the male protagonist. In the end, he betrayed him as mentioned in the mission. Although the process was a bit tragic, the goal was achieved.
You always have to pay back when you come out to fool around. Because Yu was so cruel, he left an incurable knot in the heart of the male protagonist, which caused his character to become distorted and wanted to destroy the world.
So one day, the system suddenly failed during the execution of the mission, so he was forced to return to the previous world to play another self again, so that the male protagonist could let go of his worries and stop destroying the world. After finally letting the male protagonist let go of his worries, he learned a bigger secret.
Intention: Everything in the world is going up and down.