Industrial Necromancer: All My Skeletons are Skillful Labourers [LitRPG/Fantasy]

In the vast industrial world of Ariety, a person's entire future is decided on their fifteenth birthday during a mysterious event known as the Awakening. Most teenagers dream of obtaining powerful Classes that will allow them to become legendary swordsmen, mighty mages, or celebrated heroes. Arthur Purchase has far humbler ambitions. All he wants is a decent Class that can help his struggling family escape poverty. Instead, he awakens something impossible. [SSS-Rank Class: Undead Factory Trader] A profession unlike anything ever recorded in history. With this unprecedented Class, Arthur gains access to the forbidden Nether-Realm Marketplace, a mysterious domain where the dead can be hired as workers. Tireless skeleton miners, blacksmiths, farmers, tailors, labourers, salesmen, managers, and countless other specialists can all be contracted to work under his command. However, there is one enormous problem. Every undead worker demands payment. Not in ordinary wages, but in Credits, artifacts, rare resources, and valuable treasures. The stronger and more skilled the worker, the higher their salary becomes. While other heroes conquer dungeons with swords and magic, Arthur builds factories, manages supply chains, expands production lines, and revolutionizes entire industries with his ever-growing undead workforce. As his business empire expands, his skeleton workers evolve alongside it. Ordinary labourers become master craftsmen. Miners become legendary excavators. Managers become strategic geniuses capable of overseeing entire cities. Before long, powerful corporations, noble families, and even kingdoms begin to fear the rise of Arthur's undead industrial empire. But the more successful Arthur becomes, the more dangerous the truth behind the Gates, the Awakening System, and the Nether-Realm Marketplace reveals itself. Because the dead never sleep. The dead never complain. And somewhere deep within the land of the dead, an ancient existence is silently watching Arthur's empire grow.