Modify the System and Actually Let the Villain Work for Me?

Zhou Xuan traveled through time and entered a book that became popular all over the Internet. He wanted to counterattack as a loser, but he accidentally activated the system! From then on, he wanted to change his status from useless to invincible, but he heard another bad news. Unexpectedly, he is not the only one who owns the system. There are four villains in the book. Everyone actually has a system! Zhou Xuan: "I don't want to play anymore!" System: "Host, don't worry, the host has the ability to modify the villain's system." Zhou Xuan: "Oh? Is there such a good thing?" From then on, Zhou Xuan embarked on another path. That's using the villain job stream! Villain: "I'm really convinced by this sixth man." The introduction is incompetent. Please read the text. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.