After Dressing up as the Male Protagonist's Vicious Mistress, I Became a Good Person

Two Male Protagonists / Next Year / Traveling through the book. In the book, the cannon fodder villain who bullied the male protagonist's bodyguard since childhood learns that he will be crushed by the blackened bodyguard in the future. With a strong desire to survive, he decided to be a good person and started a "top training plan" for the young guards who had just entered the house. Little did he know that this deliberate tenderness had already made the originally cold young man deeply rooted in love, locking him tightly to her side.