Makuragaeshi are a kind of zashiki-warashi: a child ghost which haunts specific rooms of a house. They take the form of a small child dressed as a Niō, a monk, or a samurai, and appear in bedrooms late at night. Makuragaeshi gets its name from its primary activity: flipping pillows. People who sleep in a room haunted by a makuragaeshi often wake up to find that their pillow has been flipped and is now at their feet. Makuragaeshi are also known for other minor pranks, such as running through ashes and leaving dirty footprints around the rooms they haunt.