What a Ghost: I Was Reborn as a Ghost

[Relaxing] + [Refreshing] + [Not scary] + [Strong story] + [Strict logic] Others are reborn as immortals, have extremely high qualifications, and become immortal kings along the way. I was reborn as a ghost and relied on my courage to become the Ghost Emperor. This is a world where ghost energy is revived, where humans and ghosts coexist. Let's see how I defeat monsters and upgrade myself to become the Ghost Emperor.