I Only Dug Up a Rock, So How Did It Become World-Ending?

To cover the medical expenses of his two younger sisters, who were seriously ill, Lin Mu took on every kind of grueling job imaginable. Washing windows high above the ground, repairing deep wells, conducting polar expeditions… This time, lured by a monthly salary of fifty thousand, he went to a remote mountain mine to work as a miner, venturing alone into an abandoned mine shaft. But something about the place was strange. Ancient veins of ore he’d never seen before, mutated creatures that worshipped stones, and prayers for blessings that could only be triggered on the brink of death… Armed with nothing but a shovel, Lin Mu fought the strange beasts lurking in the mine. What he didn’t know was that these creatures were notorious “mutated beings” everywhere else. But in this mine, they were incredibly weak, and Lin Mu killed them one after another. After they died, they became part of Lin Mu’s power, steadily strengthening his body and mind. He simply never noticed.