"Ian Raven, you are… nothing.” In a medieval fantasy world, a boy named Ian is reincarnated as the son of an ordinary farmer. Just as the status window declared, Ian lived a life as “no one.” Then one day, the mage Elendis appears before him. And for the simple reason that he “has black hair mentioned in a prophecy,” she takes Ian in as her disciple. After six years of harsh training, Ian finally sets out on an adventure as a mage. But this medieval fantasy world is far more complicated than it seems! He shudders at its outrageous standards of hygiene and grows angry at the unfathomable selfishness of people. From a boy who was nothing, to a mage who will change the world— This is the chaotic adventure story of Ian, a mage in a medieval fantasy world!