Tensei Oujo to Tensai Reijou no Mahou Kakumei

Despite her supposed ineptitude with regular magic, Princess Anisphia defies the aristocracys expectations by developing magicology, a unique magical theory based on memories from her past life. One day, she witnesses the brilliant noblewoman Euphyllia unjustly stripped of her title as the kingdoms next monarch. Thats when Anisphia concocts a plan to help Euphyllia regain her good name-which somehow involves them living together and researching magic! Little do these two ladies know, however, that their chance encounter will alter not only their own futures, but those of the kingdom...and the entire world!