Changing Her Fate as the Doomed Villainess

After suffering a sudden tragic death, a devoted reader magically transmigrates into the body of the doomed supporting villainess in her favorite romance novel. Armed with the ultimate knowledge of the plot, she strategically allies herself with the story's terrifying main villain to survive the hero's deadly pursuit. Will her clever attempts to rewrite her tragic destiny lead to a surprisingly passionate romance with the dark antagonist?