I Open a Convenience Store in the Underworld

In a parallel world, the realms of yin and yang are connected by hidden points of passage. Due to unresolved problems inherited from its past, parts of the underworld suffer from shortages and chaotic rules. Ordinary people in the mortal world know little about the underworld, but those with special constitutions can sense it and travel between the two realms. After Lin Xiaoman unexpectedly gains the "Underworld Convenience Store System," she becomes a unique link between the realms of yin and yang, uncovering a vast conspiracy and a mysterious past hidden behind supernatural incidents.