A Never Melting War

In a world accustomed to incessant war, with an empire filled with concepts of nobility that create prejudice and make children behave like soldiers from birth. A mysterious man appears before the greatest academy of magic in the world and becomes, by dubious means, one of the main professors responsible for the first-year students.
This new professor presents himself as a commoner willing to break the circle of paradigms that keeps the wheel of war and prejudice spinning. Without any fear of criticizing the empire and accusing the system of training these children for a terrible fate, a fate of simply dying in war without even knowing the reason for it.

A light novel fantasy story with magic, beings so powerful that could be considered demigods, plots involving nobility, and an unpredictable protagonist.