The Magical Revolution of the Reincarnated Princess and the Genius Young Lady, Vol. 7 (manga) — Piero Karasu

Thanks to her efforts in thwarting a coup d'état, Anis’s right to the throne is restored. The former oddball princess is now future queen of the land, and all of a sudden, she becomes a different person entirely—working tirelessly on government affairs to prepare to lead the kingdom, even throwing her beloved magical studies out the window. Euphie knows Anis is pushing herself too hard, but she’s not sure how to help…until she meets a mysterious spirit convenator who just might change their fates.