I Returned from the Concrete Hell and Became a Human Being

When a simple and honest young man from a mountain village was buried alive in the foundation and became a sacrifice in the evil "Soul Sealing Hall", his blood unexpectedly awakened the fragments of an ancient civilization that had been sleeping for thousands of years. From then on, he changed from a mortal sacrifice to the last "successor" of the lost civilization's "return to ruins". Under the steel and concrete of modern cities, there are hidden terrestrial networks and forbidden secrets guarded by ancient times; and he will use the most rustic name and the oldest inheritance to rekindle the fire of civilization and guard the mountains and rivers of the world in this apocalyptic era of thin spiritual energy.