Doomsday Safehouse + Golden Kidney = Harem Apocalypse

Dumped by his girlfriend, drowning in fifty thousand dollars of loan shark debt, and orphaned with both parents gone, he had hit absolute rock bottom. Surrounded by endless pressure and hopelessness, he thought his miserable life was doomed to end in despair—until his shabby, barely surviving convenience store awakened a miraculous dimensional ability, shuttling freely between the modern world and the brutal zombie apocalypse. The second the dimensional passage unlocked, ravenous zombie hordes swarmed the store, slamming and smashing against the door relentlessly. Yet an invisible divine barrier guarded the tiny shop perfectly, leaving all zombie attacks futile. No monster could break in, turning his humble store into the only untouched pure land in the zombie-ravaged wasteland. What started as a small cross-dimensional shop soon evolved beyond all limits. A fully automatic anti-attack defense safe house slowly rose from the ground, expanding layer by layer into an impregnable apocalyptic fortress. Equipped with all-round intelligent defense systems, it blocked zombie swarms, resisted radiation erosion, and defended against all wasteland dangers automatically, requiring no manual guarding at all. More overpowered cheats continued to emerge. The safe house unlocked unlimited supply privileges—ramen, bottled water, ham sausages, bread and all daily necessities could be eaten and used freely without limit, endless and inexhaustible. Coupled with his golden passive ability, the golden kidney generated steady wealth nonstop, pouring pure gold and massive resources into his business every single day, making his fortune grow infinitely. In the resource-barren end times, his abundant supplies were supreme hard currency. He once hauled goods with a simple tricycle and upgraded to a heavy-duty truck, expanding his trade territory rapidly. As his safe house grew famous across the ruins, countless desperate female survivors flocked to him voluntarily. Pure and innocent school flowers, cold and regal imperial sisters, and lively cute girls all abandoned their wandering lives, rushing to seek shelter under his protection. From a down-and-out man drowning in debt and despair, he rose abruptly to dominate the doomsday. Relying on his invincible automatic safe house, infinite free supplies, endless golden revenue, and a steady stream of loyal survivors, he built an unshakable business empire in the zombie hell, becoming the undisputed overlord of the surrounding apocalyptic ruins.