My name is Zhang Li, and I'm a freshman who only wants to spend four ordinary years at college. But on the first day of classes, I was forcibly bound to the Underworld Order Maintenance System, leaving me bouncing back and forth between a sea of knowledge and a real sea of ghosts. While other students took notes in class, I exorcised vengeful spirits. While they dated in their clubs, I roamed the campus with a peachwood sword, hunting ghosts looking for substitutes to die in their place. Only when the entire campus became a battlefield between the worlds of yin and yang did I realize that behind this seemingly absurd ghost-hunting game lay a vast conspiracy capable of overturning the human world... And perhaps I had never been an "ordinary person" at all.
