Doomsday: I Have a Small Shop

【Transmigration, System, Doomsday, Farming, Not Invincible, Slice of Life】 Money can make the devil turn the millstone, but in the apocalypse, having supplies can make the millstone push the devil! Lin An wakes up to find himself transmigrated into the apocalypse. As per the usual trope, transmigration comes with a system, but unfortunately, the system doesn't give him an invincible path—it gives him a shop system. This leads Lin An down the path of becoming a black-hearted merchant in this end-of-the-world scenario! — Description from novelcodex.org