Ghosts can be used to represent the past or unfinished business. For example, in many stories, a ghost might be haunting a place because of some wrong that was done to it in the past, and its presence forces the living characters to confront that history.
It's hard to say. Without knowing the details of the story, the ghosts could be either evil or not. They might be misunderstood spirits, or they could be truly malevolent entities.
In the 'thirteen ghosts true story', the ghosts are based on the Black Zodiac. You have the Torso, which is one of the more prominent ones. These ghosts are not just random apparitions. They are part of a system within the story's lore. The Bound Woman is another. Their existence is tied to a complex backstory involving curses and dark magic, which is all part of what makes the story so interesting and spooky.
The story of 13 Ghosts is a spine-chilling tale where a bunch of folks find themselves trapped in a place haunted by 13 vengeful ghosts. They must figure out a way to escape while dealing with the ghosts' wrath. It's full of suspense and scares!
There were many versions of the story of the Black and White Ghosts, but the most common story was that they were originally a pair of good brothers, named Fan Wujiu and Xie Bian. They lived in an ordinary village and were like brothers since they were young. One day, they went out to do some work and walked under a bridge. The sky was gray and it was about to rain heavily. White Impermanence wanted to go back and get the umbrella, so he asked Black Impermanence to wait under the bridge. After White Impermanence left, it started to rain heavily and the river started to rise. Black Impermanence didn't choose to leave. Instead, he continued to wait. When White Impermanence returned, he couldn't find Black Impermanence. White Impermanence watched his good brother being washed away by the flood and chose to hang himself on the bridge pillar. After the two of them died, they went to the King of Hell. In this story, the Black and White Ghosts were given this name by the King of Hell because of their loyalty and faith, and they became the great gods of the Underworld.
Well, in the origin story of 13 Ghosts, there's this guy Cyrus Kriticos who was into the supernatural. He managed to find and capture these 12 really spooky ghosts. Each ghost has a unique and often quite dark origin. For example, some were victims of terrible crimes and became vengeful spirits. Then there's the 13th ghost which has a connection to the Kriticos family's secrets. It's a complex story full of mystery and horror.