Death card.

Kim Eun-Jung a young prodigy, miraculously ends up in the novel she's been writing after a freak accident. She finds herself in the body of a high school female antagonist with the same name as her, together with the two scheming protagonists who can't stop trying to bring her down. On her journey she meets the all-so charming male antagonist who's captivated by her and works to change the plot of the story.