Waiting for Your Return with Sword in Hand

The yandere has a black belly and attacks × the cold face, the sullenness When Chu Yunheng was on a mission, he accidentally passed through the book. He became a bug in the way of heaven. However, there is still one restriction, which is to prevent the villain Junzi from turning black. If the villain Junzi turns black, he will be wiped out. Since the system has no other restrictions and does not prevent him from destroying the original plot, the prevention process is not important. As long as the villain does not turn black in the end, he will not be wiped out... Concept: Although the light is very weak, it is the hope of darkness!