Why Are the Villains Different in the Books?

(1V1 double male protagonist and double clean) As the youngest child in the family, Song Xiao is about to graduate from college and enter the society. When he was about to take graduation photos in his senior year, he went to look for his eldest sister to ask for the clothes he needed to wear for the graduation photos. As a result, he accidentally tripped over the dolls at his sister's door, and his head fell on the novel "I Have an Agreement with the District Chief" that was on his sister's desk. When he opened his eyes, a guy who called himself System 241 said that he would bind him to complete the villain's redemption plan together! "I'm not interested, send me back quickly! Otherwise I will sue you for illegal imprisonment. My second sister is a lawyer!" "Not imprisoning you, just ordinary... Uh, work?" "Oh! I understand, then I will sue you for illegal employment!" "Ah?" System 241 was confused. Why is this different from before? Jiang Chenyuan was obviously very happy when he heard about the work arrangement! System 241 could only explain it over and over again before Song Xiao believed him. In the subsequent missions, unexpectedly the plot fell apart? Why did this villain become the leader? Both the male and female protagonists listen to him! ————Dividing line———— "Yan Xihua! Why are you leaving so fast?" Yan Xihua stopped and looked back at the slow Song Xiao, "There are zombies behind you." "Ah!" Song Xiao rushed to the front of Yan Xihua, "Run!" Yan Xihua looked at Song Xiao's back and raised the corners of her mouth. "Fool."