I Am Hoeing Ghosts in Another World

Bai Chi, who accidentally came to the parallel world, thought that his mission was just to resolve the grievances of evil spirits and send the dead to death. Unexpectedly, every incident pulled him into a new unknown. His girlfriend who has infinite affection, and his best friend whose affection is close to the lover mode, every time he thinks he understands the other person well enough, he ends up being slapped in the face again and again. What is the second-hand system on his body hiding, why did its last owner die, and why did she know about the existence of the system...