Quick Transmigration: System vs System! [BL] SvS

Yu Qingyu had led a normal, unremarkable life. And without achieving anything, it was about to end, when at the age of 26, he was suddenly hit by a truck.
He didn’t want to die! He hasn’t even found his true love yet! Or any love, in fact.
Thankfully, not all hope was lost. As his soul was drifting in the void, a screen appeared in front of his eyes, enlightening the darkness.
He was offered a contract by a system. All he needed to do was to transmigrate to different worlds and complete the missions, and once he accumulated enough points, the time would reverse and he would get another chance at life!
How could he possibly refuse such an opportunity?
And so his journey started.
He completed one mission, and then another… Everything was going well.
That is, until a villain whose downfall he caused got a system of his own…