I Thought He Was a Passerby, but I Didn't Expect Him to Be a Villain

[Relaxed, funny, systematic, slow-paced, lighthearted writing] I thought I was traveling through fantasy, but I didn't expect that I was traveling through a book! I thought I was an ordinary passerby who could cultivate immortality, but I didn't expect that I turned out to be a villain who was about to die! After getting the system's script, Lin Yun knew everything. As long as I follow the original plot, I will die? Lin Yun: It doesn't matter that this villain is inappropriate! System: As long as you follow the original plot and become a villain, the host will become an immortal and ascend! Lin Yun:...... Under the coercion of the system, Lin Yun can only fulfill his duties as a villain and poison the male protagonist according to the plot. He will also be coerced by the female protagonists and ridiculed by the male protagonists! But I didn't expect... Lin Yun: System! I got the wrong script! Isn't it me, the villain, who deserves to be killed?