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

Despite her ineptitude with regular magic, Princess Anisphia defies the aristocracy's expectations by developing "magicology," a magical theory based on memories from her past life. One day, she witnesses the brilliant noblewoman Euphyllia unjustly stripped of her title as the kingdom's next queen. That's when Anisphia concocts a plan to help Euphyllia regain her good name. Little do they know that this chance encounter will alter not only their own futures, but those of the entire world. (imdb)