Tensai Assassin, 2-Dome no Jinsei wa Academy Kara

In a world governed by magicians, Van is feared as the ultimate assassin despite possessing no magic of his own. Belonging to a persecuted race born entirely without magical ability, he relies on unparalleled combat prowess and an encyclopedic understanding of sorcery to survive in the shadows. For years, he dedicated his lethal talents to securing the throne for his closest friend, the prince, hoping that this loyalty would finally guarantee safety for his oppressed people. However, when the brutal succession war concludes, the prince repays Van’s devotion with absolute treachery, slaughtering his family and leaving him to die. Instead of meeting his end, Van awakens ten years in the past. Armed with the memories of his betrayal and the hard-earned skills of a lifetime spent in darkness, he vows never to repeat his tragic mistakes. Abandoning his former allegiances, he sets a new objective: to conquer the prestigious magic academy from within, achieving absolute supremacy without ever casting a single spell. The story of the world's greatest assassin begins anew, as he rewrites his destiny not from the blood-soaked battlefields of his past, but from the quiet shadows of the classroom.