You've Got the Wrong Girl

When I opened my eyes, I was in the world of a novel. In order to avoid the fate of a cannon fodder villainess who would end up disappearing early on, I became close friends with the female lead and guided her towards romance with the male lead. But... Female lead: Evelyn's going to be with me today. Male lead: What? I can't let that happen. Excuse me... Why are you two fighting over me? The sickly male lead, who came to our house in order to recuperate, has no plans of leaving. 'You have to become healthy so you can return to the capital.' 'There's no rush.' I wanted to act as the bridge between the two before exiting comfortably, but something's clearly gone wrong. --- Evelyn Monstera knows two things. First, she's been reborn as a mean girl in a fantasy novel, and second, if nothing changes, her cruelty to the main characters will be her undoing. So when the male lead of the novel, Casis Urquio, comes to stay at her manor, all she has to do is stay out of his way. Unfortunately, Evelyn not only causes a fight between the protagonists, but also wins the affection of the male lead too! Can Evelyn set the story straight and get the happily ever after she wants?