The Magical Revolution of the Reincarnated Princess and the Genius Young Lady E2

Despite her supposed inaptitude for ordinary magic, Princess Anisphia defies the expectations of aristocracy by developing "magicology", a unique magical theory based on memories of her past life. One day, she witnesses the unjust fall of the brilliant noble Euphyllia, stripped of her title as the kingdom's next monarch. That's when Anisphia concocts a plan to help Euphyllia regain her good name, which somehow involves them living together and researching magic! But these two ladies are far from suspecting that their fortuitous meeting will modify not only their own future, but also that of the kingdom... and the whole world!