Salvation: Start by Collecting Rent from Paper People

Traveling through the apocalypse, Chen Xian found that he had become a full-scale "violent landlord". His mission is simple: clean up "illegal buildings" (villain/monster), protect "quality tenants" (protagonist/civilian), and collect hundreds of millions of "property fees" (black technology/resources). You start with a crowbar, and all equipment depends on your hands! Kabaneri? Pierce the heart with a stick and turn the corpse into armor material! Elysium? Drive a spaceship into a wealthy area and forcibly modify the household registration of all mankind! Attack on Titan? Super giant, don't move! The city wall was demolished and the bricks were left for me to build a house! Pacific Rim? A monster is coming? That's a bio-battery delivered to your door! "On my territory, Chen Xian, you must either pay rent or surrender your life!" This is the story of a man from science and technology who leads a group of two-dimensional natives and uses the torrent of steel to teach villains how to behave.