Seiken Gakuin no Maken Tsukai

In the mystical tale of Seiken Gakuin no Maken Tsukai, the formidable Demon King Leonis chose to imprison himself for a millennium, biding his time for the ultimate confrontation. However, upon awakening, he discovers his consciousness trapped within the frail body of a ten-year-old child. His unexpected savior is Lisellia, a striking young woman from the prestigious Holy Sword Academy, who rescues him with warm reassurance: “Why were you abandoned in such a place? Don’t worry—I’ll protect you now!”

Under Lisellia’s watchful guidance, Leonis is stunned to witness how drastically the world has transformed during his long slumber. Lost and disoriented, he reluctantly adapts to his new reality, eventually enrolling at the Holy Sword Academy. There, he must navigate unfamiliar surroundings while concealing his true identity as the once-dreaded ruler of darkness. The once-mighty demon king now faces an entirely different challenge—blending into a world that has moved on without him.

As Leonis adjusts to his unexpected circumstances, he begins uncovering secrets about the academy, its students, and the shifting balance of power in this unfamiliar era. His journey becomes one of self-discovery, forcing him to reconcile his past with the person he must now become.