a flowery path for the devastated male lead

Overview

Read manhwa A Flowery Path for the Devastated Male Lead / A Flowery Path to the Ruined Male Protagonist / I have been reincarnated into a ruined novel and that was also right before my favorite character became the villain! If things continue like this, it is certain that my favorite character will become the villain and die. I can't let my favorite character die, so i'll do my best to protect him. But how? By marrying him!!