After becoming a villain in a book, I can hear my girlfriend's voice

After transmigrating to the world of urban fantasy novels, I discovered that the female protagonists all have intricate connections with me. [Congratulations to the host for obtaining the Favorability System] [Reach 80 Favorability, receive a standard reward] [Reach 90 Favorability, receive a mysterious reward] The higher the female protagonist's favorability towards me, the richer the reward. Now that I have the system, I'm determined to challenge the protagonist. ...