Cities: Upgrades Starting with Miners

When I wake up in the dark and damp underground, my left foot is hell and my right foot is the world. Can the earth on which we live can withstand the impact from other dimensions? Is this brave man who started as a miner the last hope? The awakened person at the lowest level turned into a man who was completely divorced from the existing promotion system. Second awakening? No! It was the deal with the devil that gave him the ability to survive. Everything he does from now on is for redemption. Continuously break through levels, upgrade, and finally get a ticket to the new world. Everything behind the door has become different... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.