Makuragaeshi

Japanese folk tales have a lot of different ghosts and spirits, many of them geared towards silly or terrifying pranks (such as creating typhoons at funerals, luring humans off cliffs by rolling downhill in the shape of a sake bottle, or sneaking up behind women in the street at night and cutting off their hair). You can check out some of these strange and interesting monsters in these illustrations that describe their anatomy, and if you're familiar with Japanese tales you will be unsurprised to see that quite a few of them consume human souls. There are, however, differing tales in which certain spirits will be more or less dangerous: The Bisha-ga-tsuku, for example, is also said to simply pass you by if you invite it to.

Yesterday I came across a spirit called Makuragaeshi,  which translates to "pillow flipper" or "pillow mover", and thought it was too neat not to share. It's a ghost that haunts specific rooms in a house, and the main thing it does is - you guessed it - flip people's pillows while they sleep! They may also run through ashes and leave dirty footprints all over the house, or sit on a sleeping person's chest to squeeze the air out of their lungs, or, in some of the more sinister tales, steal someone's soul while they're unconscious.

The Japanese do like their soul-stealing spirits.

The Makuragaeshi is generally said to take on the form of a small child dressed as either a Nio (Buddhist guardian), a monk, or a samurai, of which I chose to illustrate the second. Dirty footprints lead up to the bed, where a girl sleeps restlessly, the Makuragaeshi pressing down on her chest as it removes the pillow from under her head. A small smile curves the prankster's lips as the girl's breathing becomes labored... Whether or not it also steals her soul is left to your imagination.

[Edit 07.10.2015: I found out today that the origins of the words "nightmare" and "Alptraum" (English and German, respectively) are of a creature that would sit on the chest of a sleeping person, putting pressure on their lungs and giving them bad dreams. The original word, "mahr", is Germanic, and an "alb" is a demon or elf. How neat!]