Maou to Ryuuou ni Sodaterareta Shounen wa Gakuen Seikatsu wo Musou suru You desu

In a world where the ancient hero’s legacy still casts a long shadow, a young boy named Ruisha finds himself trapped within a twisted spatial prison—a forgotten remnant of a centuries-old war. Within this desolate pocket dimension, he makes an earth-shattering discovery: the Demon King and the Dragon King, legendary tyrants believed to have been vanquished by the hero three hundred years ago, are very much alive. Instead of monsters, Ruisha finds unlikely mentors. From the Demon King, he learns the cunning and dark arts of the demon realm; from the Dragon King, he inherits overwhelming physical prowess and draconic might. Once a frail, powerless child, Ruisha undergoes a brutal and transformative training, awakening a unique power that fuses demonic and draconic energy within his very soul. Having forged his body into a living weapon, Ruisha finally shatters the boundaries of his prison and escapes into the outside world. His path leads him to the prestigious Magic Academy, a bastion of power where the descendants of the hero now hold sway. Yet, his arrival is not the end of his journey, but the beginning of a perilous new chapter. Surrounded by those who would revere his captors as ultimate evil, Ruisha must master the delicate art of deception while navigating the academy's treacherous social hierarchy. With the Demon King and Dragon King still trapped beyond reality, every new challenge and hidden enemy he faces brings him one step closer to a dangerous goal—to unravel the hero’s century-old seal and free the two beings who gave him everything, even if it means shaking the very foundations of the world.