Yurei do not wander at random, but generally stay near a specific location, such as where they were killed or where their body lies, or follow a specific person, such as their murderer, or a beloved. They usually appear between 2 and 3 a.m, the witching hour for Japan, when the veils between the world of the dead and the world of the living are at their thinnest.
Yurei will continue to haunt that particular person or place until their purpose is fulfilled, and they can move on to the afterlife. However, some particularly strong yurei, specifically onryo who are consumed by vengeance, continue to haunt long after their killers have been brought to justice.
[edit] Famous Hauntings
Some famous locations that are said to be haunted by yurei are the well of Himeji Castle, haunted by the ghost of Okiku, and Aokigahara, the forest at the bottom of Mt. Fuji, which is a popular location for suicide. A particularly powerful onryo, Oiwa, is said to be able to bring vengeance on any actress portraying her part in a theater or film adaptation.
