I Became the Redemption Villain System

After Yu Wan's death, she inexplicably became the redemption system. The main system issued an order to redeem the villain and avoid the end of the world. Once the mission failed, she would lose the opportunity to become a positive person and re-enter the reincarnation. Yu Wan: "!" Stop talking, I will definitely complete the task. Until Yu Wan opened the system interface and took a look at the plot, he suddenly said: "..." This world was originally a story where the protagonist seemed to be cheating, recruiting girls along the way to upgrade and fight monsters, and finally killed the villain and took all the girls and younger brothers to ascend. But the problem is... The villain Demon Lord who should have been killed by the protagonist was killed and replaced by the demon cultivator who appeared inexplicably. As a result, no matter how strong the protagonist becomes, he cannot defeat the villain. In the end, the villain directly kills the protagonist out of boredom and destroys the world, including himself. Yu Wan shuddered. What a cruel and terrifying villain this must be. With the thought that the mission might fail, Yu Wan plunged into the world to prepare to bind the villain. [Ding——Hello host, I am——] Yu Wan was suddenly stuck, because the big villain was lying on the ground in a mess, covered in blood, with monsters lurking around him, looking at him with eager eyes. He was a completely pitiful little creature. Yu Wan hurriedly bought a treatment gift package from the mall and issued the system task again: [Dear host, as long as you bind this system, you can enjoy this treatment service again. The villain smiled coldly: "Dream." And later... The Demon Lord, who was lying crookedly on the throne in black robes, looked coldly at the round demon pet in front of him and smiled sinisterly: "System, if you don't exchange the human shell for my Demon Queen, I will destroy this world." Yu Wan had tears in her eyes. Why is there something wrong with this redemption route? The villain actually wants to destroy the world! Purpose: Protecting the world is everyone's responsibility