Both a Ghost and a Demon, the World Feels a Little Strange

[Urban Supernatural + Relaxation] I thought it was time traveling and rebirth, but I also thought it was all human beings traveling through time and only I was left. But what happened to the ghosts and demons that suddenly appeared? Has the spiritual energy been revived? No one told me this! But fortunately, there is a system in place, so surviving is not a problem~ ... At least that's what Zhang Han thought at first.