After nearly two years, Rozemyne awakens to a vastly transformed world, leaving her with a sense of disorientation similar to that of Tarou Urashima from the Japanese folklore. Nevertheless, she has no time to adapt to her new surroundings as she is promptly enrolled in the Royal Academy to fulfill her duties as a noble.
Tasked with the daunting responsibility of elevating Ehrenfest's status, Rozemyne faces an array of peculiar instructors and children from different duchies. Nevertheless, her passion for the grandiose library at the Royal Academy drives her to rise to the challenge. With no other Archduke prospects or royalty present, Rozemyne takes hold of the library as her own.
