The protagonist, formerly a modern-day woman who wished to be reborn as an villainess in an otome game, finds her wish granted. She awakens as Alicia Williams, the seven-year-old eldest daughter of a prominent noble family specializing in dark magic. Unlike the typical heroines who possess special abilities and charm everyone, Alicia embraces her role as the villainess, aiming to become the most infamous woman in history.
Alicia's family consists of her father, mother, and three older brothers: the twelve-year-old Albert, and the ten-year-old twins, Alan and Henry. Her brothers are exceptionally talented and are destined to be love interests for the game's heroine. Alicia, remembering the original game's plot, knows that the original Alicia bullied the heroine and was subsequently disowned by her brothers. However, she cannot recall the specifics of the bullying.
Driven by her ambition, Alicia decides to train rigorously. She requests sword lessons from her brothers, who are initially bewildered by her request, as sword fighting is not typically taught to young ladies. Albert, though skeptical of her persistence, agrees to teach her, provided she builds her physical strength. Alicia readily accepts the challenge, easily surpassing the prescribed daily exercises (100 sit-ups, 50 push-ups) due to her past life's athletic background. She also begins spending hours in the vast Williams family library, though she struggles to find books on dark magic, instead immersing herself in botany and other subjects, reading an astonishing twenty-three books in ten hours.
Over the next year, Alicia, now eight, dedicates herself to her training. She endures Albert's rigorous sword training, which primarily focuses on building the stamina to hold a sword for extended periods. Despite finding the repetitive drills tedious, her determination to become a formidable villainess fuels her perseverance. She secretly practices in the garden at night, further enhancing her physical capabilities. In addition to her physical training, she continues her voracious reading, consuming approximately four thousand books in a year, yet still unable to locate any texts on dark magic.
During this time, the other potential love interests from the otome game begin to frequent the Williams estate. These include Eric (fire magic), Finn (light magic), Gale (wind magic), Curtis (nature magic), and Duke (water magic), the prince. Alicia observes them, noting their striking appearances and recognizing them from her past life. When she finally approaches them to request sword lessons, they are surprised by her demeanor, which differs from the impression her brothers had given. Despite their initial skepticism and Albert's gentle attempts to dissuade her by calling swords dangerous, Alicia demonstrates her newfound strength by effortlessly cutting a falling apple in half with a sword. This feat impresses everyone, particularly Duke, and convinces Albert to formally teach her sword fighting. Alicia, overjoyed at finally being recognized and allowed to pursue her goal, embraces Albert, momentarily forgetting her villainous persona.