I must have a strong influence on my son because he came back from the book fair today with a stack of books on ghosts and monsters. We looked through these books today together and had a wonderful time. My favorite section from his Horrifica book was on Japanese ghosts. It is no surprise that the Japanese would have interesting ghost lore. The Japanese have some of the most wicked imaginations when it comes to ghosts and horror. Just look at the best ghost movies, The Ring, The Grudge, etc. They are all taken from the minds of the Japanese. Any even cursory look into Japanese cinema reveals a strong Japanese folklore filled with demons and ghosts. Japanese folklore is filled with ghosts and perhaps the most terrifying of these ghosts is the Gashadokuro. The gashadokuro is a ghost which is assembled from the bones of those who have starved to death. Once these bones have been assembled to make a gashadokuro, it becomes a skeleton that is over 15 ft tall and is ravenous. If it finds you, this monstrosity will eat your head. The only thing that can protect you from the gashadokuro is to run when you hear the ringing in your ears that marks its approach.
The Gashadokokuro aren't the only terrifying ghosts in Japanese mythology. According to Norman Rubin:
"Belief in ghosts, demons and spirits has been deep-rooted in Japanese folklore throughout history. It is entwined with mythology and superstition derived from Japanese Shinto, as well as Buddhism and Taoism brought to Japan from China and India. Stories and legends, combined with mythology, have been collected over the years by various cultures of the world, both past and present. Folklore has evolved in order to explain or rationalize various natural events. Inexplicable phenomena arouse a fear in humankind, because there is no way for us to anticipate them or to understand their origins.:
Kabuki theater is filled with stories of vengeful women spirits that were wronged in life. Koizumi Yakumo collected many of the famous classic Japanese ghost stories in the late 19th century. You can find them at http://ghost.new-age-spirituality.com/japanese.html .