Oh My, I Messed Up the Story by Mcllorycat is a captivating novel following the journey of Katie Pullman, a young girl with chronic illness, as she discovers herself transported into a fictional world she once only knew through books. Faced with the challenge of preserving the narrative she once cherished, Katie navigates through comedic, dramatic, and romantic encounters, all while exploring the intricacies of isekai and slice of life genres. With themes of aristocracy, royalty, and transmigration, this novel weaves a tale of unexpected twists and turns that challenge the notion of conventional happy endings.