hitodama

thumb|160px|right|Hitodama from the Konjaku Gazu Zoku Hyakki by [[Toriyama Sekien]]

In Japanese folklore, hitodama (; meaning "human soul") are balls of fire that mainly float in the air during the night. They are also referred to as onibi (demon fires) or hikarimono (glowing things). They are said to be "souls of the dead that have separated from their bodies," which is the origin of their name.