After Merging the Demon Species, I Plunder a Talent Every Week

A hundred years ago, the 'Abyss Catastrophe' broke out, the earth was polluted by dark matter, and abyssal beasts and aberrations were rampant. Humanity retreats to high walls and builds 'steel fortresses'. Order is barely maintained during the day, but at night it is shrouded in gray fog, and aberrations may break out at any time. The official "Vigil Bureau" is responsible for cleaning up monsters that have sneaked into the city, while the chaebols monopolize high-end genetic medicines and upgrade resources. But everything gradually changed after the delivery boy Lu Chen woke up...