Tensei Oujo to Tensai Reijou no Mahou Kakumei

The Magical Revolution of the Reincarnated Princess and the Genius Young Lady / / / / Zhunshng wngn y tinci qinjn de mf gmng / / Revolusi Ajaib Putri yang Bereinkarnasi dan Wanita Muda yang Jenius / / La rivoluzione magica della principessa reincarnata e della signorina geniale / / Cuc cch mng ma thut ca cng cha chuyn sinh v tiu th thin ti / MagiRevo Despite her supposed ineptitude with regular magic, Princess Anisphia defies the aristocracy's expectations by developing "magicology," a unique magical theory based on memories from her past commoner life. One day, she witnesses the brilliant noblewoman Euphyllia unjustly stripped of her title as the kingdom's next monarch. Thus Anisphia concocts a plan to help Euphyllia regain her good name somehow involving 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!___- Official Web Novel