Resurrection of Spiritual Energy: a Psychosis That Even Ghosts Can't Stand

Who would have thought that the recovery of human spiritual energy would start from a mental patient. Spirit System: 456, I gave you so many super powers, so use them, catch ghosts and upgrade, don't mess around. Those ghosts are the fifth level civilization, and you are only the fourth level. If you don't obey, you will be killed. Oops, I'm so pissed off at you again. 456: Go away, no matter what level you are, don't delay me from eating chicken legs. Ghost System: He's going to die. This psychopath doesn't act according to common sense and has escalated again. Whoever kills him, I will make him the Ghost King! Sixth-level civilization: Civilizations at the same level must speak out. When the insane ghost-killing system of humans is upgraded to level five, we will then destroy humans...