The Magical Revolution of the Reincarnated Princess and the Genius Young Lady

5-year-old Princess Anisphia "Anis" Wynn Palettia of the Kingdom of Palettia one day recalls knowledge and common sense from her previous life. Triggered by this, she develops a strong passion for magic, but lacking magical aptitude, she invents a new technological system called "magic science." At 17, Anisphia, during a nighttime flight test of her invented flying magical tool "Witch's Broom," loses control and crashes into a ballroom where noble children are attending a soirée. There, she encounters her brother, Prince Algard "Allie" Von Palettia, confronting Lady Euphyllia "Euphy" Magenta of the Duke of Magenta's family with a broken engagement. Unable to ignore Euphyllia's plight, Anisphia forcibly takes her to her own palace. Subsequently, Anisphia decides to make Euphyllia her assistant, and together they strive to advance magic science through various means.