The Magical Revolution of the Reincarnated Princess and the Genius Young Lady, Vol. 5 (manga) — Piero Karasu

Princess Anisphia has always thought there was something off about the girl at the center of the engagement scandal, Lainie Cyan. So she decides to conduct a physical checkup on her -- and comes to an astonishing conclusion! Now, with Anis, Euphie, and Tilty's help, Lainie gets busy learning to control her special powers, whether they're a blessing or a curse. At the same time, Algard takes the lead in a grand scheme that could impact the whole kingdom...