Hero's Labyrinth Creates a Demon Lord

At the age of fifteen, the Guild Hall opens and gives the young a chance to acquire a class. This is used to shape their futures. Ryzer, the son of a lower noble, couldn't awaken a class by fifteen. Seeing this, his own father sells him into slavery, something far more shocking. Breaking from the shock, Ryzer finds himself bought and placed into the service of a kind older man. What is his purpose? Early on, there will be a larger number of time skips. Once he is 20, the skips will reduce to the smallest amount, or be extremely small.