Oda Nobunaga to Iu Nazo no Shokugyou ga Mahou Kenshi yori Cheat datta node, Oukoku wo Tsukuru Koto ni Shimashita

In a world where destiny is decided by divine decree, every citizen must visit the temple upon reaching adulthood to receive their lifelong vocation. Most are granted familiar roles, such as warriors or magic users, setting them on predictable paths. However, Arsrod—the physically frail younger brother of a minor feudal lord—experiences something entirely unprecedented during his ceremony. Instead of a conventional class, he is bestowed with the mysterious title of "Oda Nobunaga," an unheard-of designation that leaves everyone around him utterly baffled. No one in this realm can decipher what this strange vocation means or how it functions. Yet, the enigmatic title soon proves to be far more powerful than any standard combat or magical profession. Upon receiving it, Arsrod inherits the vast battlefield experience, brilliant tactical genius, and formidable martial prowess of the legendary Sengoku-era strategist himself. Empowered by these extraordinary abilities, the once-weak young man undergoes a dramatic transformation. Armed with unmatched strategic brilliance and a destiny rewritten by history's greatest warlord, he sets forth on an ambitious new path: forging his very own kingdom from the ground up.